168+ mph (270+ km/h) Y. This is because UK tyre speed ratings are based on European Union-wide limits, and mainland Europe measures. A V speed rating means the tires have cleared speed testing for speeds touching 149 mph (240 km/h). Advantages and Limitations of T Speed Rated Tires. It is good to know that this Cooper tire comes in various sizes from 15 to 19 inches, with speed ratings of V, W, and H. The tyre speed rating will be the final letter, found after the wheel size details. Older bikes, manufactured before the use of speed ratings became widespread, will not have a rating listed in their manuals or literature. H: Maximum Speed – A tire that has this rating is capable of running at up to 130 miles per hour (or 225 km/h). Look for the tyre's sidewall: The speed rating is usually printed on the tyre's sidewall, along with other important information such as the size, load index, and type of tyre. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. It is usually the last metric displayed in the tire size sequence. 0 5. Then lay the tire on top of the rim. What does 101T mean on a tire. Typically the speed rating chart goes in alphabetical order in accordance with speeds from lowest to highest. The speed rating is represented by a letter, and it’s the maximum safe operating speed of the tire. The speed rating is another essential part of your tire’s performance. We recommend that you fit the correct speed rated tyre as recommended by the manufacturer of the vehicle. The speed rating system was developed to control the safe speeds at which tires must still perform as per the. • W - up to 168 mph. 186. Speed rating corresponds to the maximum speed that a tire can sustain when it is carrying the recommended load capacity. ZR Above 240km/h or 149mph. For instance, a 2022 Chevrolet Trailblazer LS comes with 225/60R-17 99H tires. An H tire’s maximum pace operating under favorable circumstances is approximately 130 mph. Today’s speed rating system uses letters A through Z. Tyre speed ratings should be matched to the official top speed of your car. Certain sizes carry a W speed rating, which corresponds with a maximum speed of 270 km/h. A 107t tire can operate at speeds up to 190 km/h, whereas a 107h tire can safely reach speeds up to 210 km/h. all explained. Speed Ratings Can Range From H To W, And What They Mean Is The Following. 3. When properly inflated and maintained, a tire with a 100T rating is designed to handle speeds up to 118 mph (190 km/h). A tire speed rating- H defines a maximum speed of 130 mph at which the tire must still perform as designed. In contrast, a V-rated tire’s top velocity is slightly faster than an H-rated tire, around 149 mph. For instance, a tire code can be 207/55R/06/91V. The final letter is the speed rating. For example, a tyre that reads 255/40 R20 101V shows V to be the tyre speed rating. Y - Up to 300 km/h. A tire’s certified speed rating is given a letter from A to Z, ranging from 5km/h. The tyre load index and speed rating make up the tyre service description which is a standardized number located next to the size on the sidewall of the tyre. You'll usually find the speed rating — represented by a letter — after the tire's size info, paired with the load rating. For example the reverse of what you're intending; replacing H rated tyres with V rated tyres. H-Rated Tire: It is rated for up to 130 mph. A 'T' speed rating for a Buick everyday driver that's not going to be driven like mad will be just fine. Therefore, there is. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Therefore, before you buy that “super. Q — Up to 99 mph. For S-speed-rated tires, it's 112 mph; for T, 118 mph. Nowadays, it means 149 mph but. 0 3. Above 300 km/h or 186mph. It is important to buy tire replacements with the. At one time, the maximum speed a tire could have, aVa, was a maximum of 240 km/h (149 mph) or more. Here, the tire speed rating is V. Some tires have speed ratings of W, 168 mph and Y, 186 mph. You can easily find out the tyre speed rating by looking at the tyre markings on the existing tyres. When a tire is stamped “205/65R15/94V,” it has a speed rating of V. T 190km/h Family Sedans &. J: 100 kph 62 mph. For example, if your tyre reads 255/55 R 16 91V, then your tyre speed rating is ‘V’. The sidewall of your tyres can come off. Both can carry the. The speed symbol of H is given after the load index. But, there is definitely a low-end threshold for a true performance all-season tire. The letters – h, r, v, w, t, y, s, and q – represent the Speed Rating, a measure of the maximum speed the tire can handle. This guide will go into the specific characteristics of H and V. And typically, higher speed rated tires don't last quite as long either. The main difference between 88T and 88H lies in the speed rating. TK-BMW. While traveling at speeds exceeding 150mph, even the slightest steering inputs can make a massive difference in the levels of heat a tire endures. Primacy™ Tour A/S H,V All-Season 55k Primacy™ Tour A/S W All-Season 45k Primacy™ Tour A/S ZP V All-Season 30k Pilot® MXM4 ®H,V All-Season 50k Pilot® MXM4 ®W All-Season 40k Primacy™ 3 H,V Summer 45k Primacy™ 3 W,Y Summer 35k Primacy™ 3 ZP H,V,W,Y Summer 30k Primacy™ 4 V Summer 45k Primacy™ 4 W,Y Summer 35k. There are a bunch of different speed ratings, but we’ll focus on the ones you’ll most likely come across when shopping for tires for your car or truck: H-rated and V-rated tires. Pros. It’s a speed rating - your car must be rated to be capable of a top speed that exceeds the limit of the H rating. But there is a little more to that. For S-speed-rated tires, it's 112 mph; for T, 118 mph. H-Speed Rated Sizes: Maximum Speed (mph) 100 106 112 118 124 130 Inflation Increase (psi) 0. Quite simply, you shouldn’t drive your car faster than the speed rating on the tyres on your vehicle. Next is the speed rating, which is indicated by a letter. H-rated tires can handle a maximum speed of 130 mph, while V-rated ones are good for up to 149. H, T , V, W SPEED RATED, UTQG 420 A A AND 460 A B. 186. The main difference between the two speed ratings is obviously the speed. Tire Speed Rating H Vs T. A more recent development is a tire with a (Y) rating, which is given to a tire that can withstand high speeds past the 186-mph mark. The “101T” tire code indicates a load index of 101, which means that each tire can support up to 825 kilograms. Here the last part i. V-rated tires are approved for speeds up to 149 mph (240 km/h). R — Up to 106 mph. 149mph+. V or W Speed Rating: 6 years and 65,000 miles treadwear warranty. Y-rated tyres are rated in excess of 186mph. On the other hand, V-rated tires are good for 149 mph (240km/h), so as long. These days, manufacturers mark even relatively inexpensive tires T (up to 118 mph). 168 mph. W 168. Nowadays, it means 149 mph but no higher. ) 100 100 100 100 100 100 V-Speed Rated Sizes: Maximum Speed (mph) 100 106 112 118 124 130 136 143. V 240km/h Sport Sedans, Coupes & Sports Car Tyres. Don’t think your tire’s speed rating is your vehicle’s actual speed capacity. The speed rating must be stamped on the tyre. 2 mph steps in 10-minute increments until the required speed has been met. V Speed Rating. The letter W denotes the maximum speed rating, which translates 168 mph—not something intended for mom's minivan. The speed rating numbering system run from A1 to A8 in sequence, whilst the letters run from B to Y. One thing is certain: swapping the two is not good for the vehicle or the driver. It is higher than the S Speed Rating, which is common on standard family cars, but lower than the H, V, and W Speed Ratings found on sportier and high-performance vehicles. In the 60s or so, they used S, H, and V as the three ratings. As mentioned above, the “H” speed rating does not appear after “G” but instead between “U” and “V”. The T Speed Rating falls in the middle of the tire speed rating spectrum. H-rated tires are typically found on. All-Terrain Truck Tires. In the instance of the tyre size shown above, the speed rating would be " V " - this allows a maximum speed of 149mph. Despite being substantially further in alphabetical order, T-rated tires have a lower speed rating than H-rated tires. Tire sizes listed with 2. Up to 62 mph (100 km/h) Flotation Type. SPEED RATING V. P 150km/h Winter 4×4 Tyres. In this article, we’ll dive deep into the nuances of tire speed ratings, particularly H vs. The speed rating is what determines how fast a tire can go before it tears itself apart. It’s represented by a letter. T-Rated Tire: T-rated ones are frequently recommended for family sedans and vans. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Based on the tire rating system, you will have an informed choice. While all Z-speed rated tires are capable of speeds of 149 mph and above, prior to the W- and Y-speed ratings were identified in the service, how far above 149 mph was not identified. A relatively low treadwear rating of 420 explains why Hankook limits warranty coverage to 80,000. Tire speed ratings are paired with the load index. Winter tire speed rating is a crucial aspect to consider when choosing your vehicle's tires. However, the difference lies in their speed ratings. Once you know your tire’s speed rating letter, you can look. W is 168 miles per hour. P 93 MPH. V Speed Rating: Max speed limit of 240 mph. It looks something like this: P225/60R16 97H. As a result, the second tires are the ones you’d fit on a faster vehicle, capable of. T: Up to 118 mph. If the mph speeds assigned to each speed rating. V 240 km/h. You'll usually find the speed rating — represented by a letter — after the tire's size info, paired with the load rating. V-rated tires have a top speed of 149 mph (240 km/h), W-rated tires can handle up to 168 mph (270 km/h), Y. Note – If the Y speed rating is displayed inside parentheses, it means. 1947–1967. Last but not least, 114W! Its load index is 114, meaning it can carry 1180 kg or 2601 lbs. The following letter – W – is the tyre's speed rating. H-rated tires have a maximum safe speed limit of up to 130 mph (210 km/h). The sidewall of your tyres will have a load and speed rating listed closely to the size of the tyre. Once the highest speed rating a tire could have, “V” used to represent a maximum of 149 mph (240 kph) or more. Models with H, V and W speed ratings: 55,000 miles warranty; Models with W speed rating: 45,000 miles warranty; Models with H speed rating: 30,000 and 60,000 miles warranty; So what do these warranty periods tell us? Models that are provided with lower speed (H) rating last at least 15,000 miles before than those which come with the. 149 mph is the maximum speed at which a tire with a V speed rating is safe to drive. A long-lasting, premium all-season tire, which offers one of the longest mileage warranties in its class. Passenger touring tires are often T-rated or H-rated, while ultra-high performance tires tend to have a speed rating of V, W, or Y. These alphanumeric codes might look cryptic at first, but they convey valuable information. Get responsive handling and all-season performance from the W-speed rated Firehawk GT Pursuit and the V-speed rated Firehawk PV41. W Vs Y-Rated Tries – Final VerdictThe Wild ‘W’ – Speed Rating. A 103v tire has a speed rating of 103 mph, while a 107v tire has a speed rating of 107 mph. In earlier incarnations of the speed rating system, “H” stood for “high performance,” which is why it maintains an unusual position in the speed rating spectrum today. The Ultramax AS features 4 wide circumferential grooves to help channel water away quickly and efficiently delivering excellent wet weather traction. 2. V-rated tires have a maximum safe speed limit of up to 149 mph (240 km/h). 581 posts · Joined 2015. An H-rated tire has a maximum capability of 130 mph, but a T-rated tire falls behind at 118 mph. The exception to the rule is “H” at 130 mph which comes after “U” at 124 mph. That particular character corresponds to a maximum speed of 130. 130 mph & 210 km/h. Depending upon the different width, height, diameter and load, tyres are provided with relative speed ratings. W. The ’95’ signifies a load index of 95, meaning the tire can bear up to 690 kg of weight. However, you cannot do what you're asking and replace higher V rated tyres with lower H rated specimens. If the tire set shows varying wear, you can get a replacement or a refund. R 170km/h 4×4 & Bakkies Tyres. Rating Maximum Speed Use. The speed rating doesn’t imply the vehicle can drive that speed, but the tires are capable of supporting the car at that speed. So which tyre speed rating do I need? Most standard consumer vehicles fall under the speed rating of S or T (for 112 or 118 mph limits). The Speed Rating (like T, S, Q, H, R, V, W) indicates the top speed your tire can safely handle. H is the speed rating. A relatively new addition to the speed rating chart, tires with speed rating “W” can achieve a maximum sustained speed of 168 mph (270 kph). A tire with a “V” speed rating can handle 240 km/hr, or 149 mph. Once the highest speed rating a tire could have, “V” used to represent a maximum of 149 mph (240 kph) or more. ZR stands for Z-Rated. Z. 2K engine cars will do a true top speed of 175KPH, the Apollo tyres fitted as OE are T rated which is good for 190KPH. It`s not just an issue above 168 mph as some may think. This rating represents the maximum safe speed a tire can maintainMost winter tires fall under the Q speed rating. shrimps/prawns, krills, coleoids, etc. For example, H is between U and V, with the common perception that H stood for “high performance” at one time. However, when it comes to speed, the 105Y tire, with a speed rating of 300 km/h, outpaces the 105W. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. Usually, they are installed on SUVs, where the load rating is. Dimples on the tread act to distribute heat evenly across the tire to prevent abnormal wear, which in turn, extends strength and the life of the tire. 0 5. 105W vs 105Y. These letters are arranged in increasing order of capability, with S being the lowest and Z being the highest. H: 130 MPH:. These speed ratings provide a more precise indicator of a high performance tire’s speed over 149MPH. You'll usually find the speed rating — represented by a letter — after the tire's size info, paired with the load rating. When you see a tire with a speed rating of Z. These beauties are built to last for an extended period. To receive its rating it must demonstrate that it can sustain a particular speed when tested with simulated loads. A tire with the designation 100h has a load index of 100 and a speed rating of H. Speed Rating H. Now, let’s decode ‘102H. The speed symbol located on your tire indicates the maximum speed capability of the tire when properly loaded and inflated. 6 inches wide), 25. E: 70 kph 43 mph. Tire with higher speed rated usually has better traction which will give you higher lateral acceleration and shorter braking distance. e. Understanding V And H-Rated Tires. The N’Priz AH8 is designed for family sedans that require all-year traction in dry, wet and light snow conditions. The ‘103’ here signifies a load index, meaning that this tire can comfortably support up to 875 kg. 25 or 2. They are often found on sports cars and high-performance vehicles that demand excellent handling and. Less frequently seen ratings are Q 99 mph and R 106 mph- used in some light truck tires. M+S ratings are overused these days. In earlier incarnations of the speed rating system, “H” stood for “high performance,” which is why it maintains an unusual position in the speed rating spectrum today. This rating is commonly found on tires for sedans and standard passenger vehicles. Its rated for up to 118 mph. V 149. Q 160km/h Winter Tyres. Not so simple, the original equipment tire is the Bridgestone Turanza EL400-02 with a H speed rating, UTQG rating 300AA and tread depth 11/32". A V rating represents 149 mph but no faster. S - Up to 180 km/h. It is not advised, however, because the speed rating is more than just a speed index; it is also a sign of enhanced grip and ability. An H speed-rated tire can go up to 130mph or 210kph which means that these tires can comfortably drive at any speed below 130mph/210kph. The V category changed to 149 mph and the Z speed rating was introduced to cover speeds over 149 mph. 4 most common speed ratings are H, V, T, and W, so let’s see how they differ. V, demystify common misconceptions, and guide. I understand that the speed rating is a 10min test (sustained speed at fixed temp) although most tyre manufactures will over design. 225/50R16 89S. When new cars were developed that could exceed this speed, the automotive industry added the W and Y ratings. If I'm not mistaken, a 'T' speed rating is around 110 to 115 mph anyway. As a result, the second tires are the ones you’d fit on a faster vehicle, capable of. What is H or V rating in a tire? H and V ratings are designations for passenger tires. This is a standing policy in most shops, including Costco. Learn how these codes help you make an informed decision about. The speed rating is denoted by a letter, such as "H" or "V," which corresponds to a specific speed range. If possible use the same speed rating the manufacturer calls for. The tyre speed rating will always be shown after the wheel size information, in the example below the Speed Rating is 'W'. Both 97T and 97H can carry the same load, but the 97H can handle higher speeds (130 mph) compared to the 97T (118 mph). W Speed Rating. An ‘H-rated tire is rated at 130 mph, while a ‘V’ rated tire has a top speed of 149 mph. For example, if you look at the image below. 0 Load Capacity (% of max. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Are you wondering what your tires' speed index or load index are? Learn how to prepare your motorcycle with Michelin's experts and stay safe on the road. H-rated tires are designed for speeds up to 130 mph, while V-rated tires can handle up to 149 mph. Speed rating ≠ top speed. Speed ratings for other tires include Q, 99 mph; H, 130 mph; and V , 149 mph. For S-speed-rated tires, it's 112 mph; for T, 118 mph. The mileage fall by half if you use different sizes on the rear and front axle. Remember, driving within safe speed limits ensures optimal tire performance and longevity. Focus ST is higher performance version than base model, I wouldn't go with less than H. Each of our tire lines is made in a selection of sizes to fit appropriate vehicles. Remember, driving within safe speed limits ensures optimal tire performance and longevity. There are also charts that exclude the “P” rating. Let’s break these ratings down in an easy-to-reference table:. 300. V Speed Rating, up to 149mph. U is 124 miles per hour. M and N: The maximum speeds for these two ratings are 81 and 87 MPH respectively; this is typical of your average spare tire. Speed rating. Manufacturer Special Warranty: 60 days satisfaction warrantyThe N5000 Plus features an innovation simple in its concept, but brilliant in its function. ZR is a speed rating for tires with a maximum speed capability higher than 149mph. Speed rating of the tire is denoted by letters, like T, H, V, W, and so on. Exceeding your tire’s speed rating can cause it to fail. Family cars, vans, and light-duty trucks are rated "P" (93 mph) to "T" (118 mph) by the majority of everyday drivers. As an illustration, you may see “235/45R17 94V,” where “V” denotes the speed rating. The speed rating is usually included in the tire size and performance code, which can be found on the tire’s sidewall. Thus, 88H tires are better suited to vehicles that require more speed capacity. This is more than adequate for most day-to-day driving conditions. This tyre speed index should be used as a guide only. So if the Z rating is still used, it must be in conjunction with the W as. Q 99 MPH Winter tires (w/or w/out studs) R 106 MPH H. A 109V tire can safely hit speeds up to 149 mph (240 km/h), while the 109H is a tad more modest, maxing out at 130 mph (210 km/h). That’s because Z-speed tires were meant to represent speed ratings higher than 149 mph. How T Speed Rating Fits in the Rating Spectrum. R — Up to 106 mph. With this in mind, in this comparison, the V-rated tire will have an edge. W Speed Rating: Max speed limit of 270 mph. Alternatively, the letter may appear at the end, following the load index. The speed rating code is semi-alphabetic and goes like this: B: 50 kph 31 mph. Since then, tires have been made that are capable of reaching even higher speeds, leading to the creation of the W and Y speed ratings. Typically, tyres with a W rating can handle a maximum speed of 168 mph. If the letter here is Z, indicating a maximum speed in excess of 240 km/h (149 mph), then a more specific letter W or Y may appear after the load index (see speed rating, below). Tyre speed ratings are typically represented by a letter code that appears after the tyre size. Here's a chart, stolen from Michelin's site. 107t vs 107h: Again, both these tires can carry a load of 975 kg, but their speed ratings differ. More expensive tyres can bear the H rating. There are also charts that exclude the “P” rating. The current standard for tire size and information looks like P215/60R15 89H, where the 89 is the tire load capacity and the H indicates the speed rating. de Havilland Canada DHC-3 Otter. Z speed-rated tires originally reflected the highest tire speed rating - i. ** Per the TR&A 2007 yearbook, for tires having a maximum speed capability above 240 km/h (149 mph), a ZR may appear in the size designation. For S-speed-rated tires, it's 112 mph; for T, 118 mph. The W tire speed rating is higher than the V tire. Tires with a Y speed rating undergo rigorous testing to ensure their durability and stability at high speeds. They range from “L,” which dictates a maximum speed of 75 mph, to “ (Y),” which is for speeds in excess of 186 mph. N — Up to 87 mph. In summary, H and T markings on tires refer to the maximum speeds they can support – given payload capacity, recommended tire pressure, and ideal road conditions are met. The following list includes the most common speed rating symbols and the associated maximum speeds: L 75 mph 120 km/h. This rating is higher than the V rating and is suitable for driving at high speeds for extended periods. For most passenger vehicles, you may usually encounter the T vs. Groove serration provides stability and the lateral groove design offers a peaceful and comfortable ride. W (ZR) 270 km/h. Meanwhile, the letter V that follows the load index shows the speed rating of the vehicle. V-rated. W speed rating: 168: Exotic sports cars: Y speed rating: 186: Exotic sports cars (Y) speed rating: 186+ Exotic sports cars: You might wonder why tire speed rating H is out of order, situated between U and V? Before 1991, according to a Wikipedia entry about tire codes, the letter H stood for "high performance," with a speed rating of 130 miles. G: 90 kph 56 mph. Some tires have speed ratings of W, 168 mph and Y, 186 mph. Speed ratings go from A1 to Y, with A1 having the lowest rating and Y being the highest, but. It indicates the tyre's ability to dissipate heat and maintain stability at higher speeds. The Bridgestone Turanza Serenity Plus has a V speed rating, UTQG 600AA and 12/32" tread for a few dollars less. Both H and V rated tires fall under the category of performance-touring tires, designed to provide better handling and. The code consists of a series of letters and numbers. But which is better? The main difference between H and V ratings is the. 130 mph & 210 km/h. If you go over this threshold, you are risking various consequences such as accelerated tire wear. Beyond that, the tire's performance, particularly its heat dissipation, could be compromised. Max Speed (mph & km/h) Q: 186 mph & 300 km/h: S: 112 mph & 180 km/h: U: 124 mph & 200 km/h: V: 149 mph & 240 km/h: Y: 186 mph & 300 km/h: R: 106 mph & 170 km/h: T:. Your H-rated tires should go up to 130 mph, but your V-rated tires can be driven at up to 149 mph. If your vehicle has a ‘V’ tyre speed rating, it is capable of handling speeds of 240km/h, while a ‘U’ speed rating specifies maximum speed of 200km/h. 6 inches tall, and fits a 17-inch wheel. Maybe it's time for me to step in an explain the difference between an T speed rated tire and a H speed rated tire. Check Pricing. While we found prices are similar to S- and T-rated tires, H-rated tires didn't last as long in our treadwear test--an average of 49,180 miles, versus 61,080 for our S- and T-rated tires. For example, 225/50HR16 would be an H speeding rating tire, and 225/50VR16 would be the same size tire except for V-rated. For tires intended for vehicles with a top speed higher than 149mph. Consult your vehicle's manual or a tyre. Get to know your tire speed rating. Common examples are H and V: An H-rated tire can safely run at a sustained maximum speed of 130 mph and a V-rated tire at 149 mph. Y is 186 miles per hour. Humans have. That’s why we asked Engineering Explained’s Jason Fenske to teach you how to identify your tire spee. The speed rating is what determines how fast a tire can go before it tears itself apart. They are often found on sports cars and high-performance vehicles that demand excellent handling and stability at elevated speeds. #6 · May 7, 2016. Unless you drive above 130 mph, it's nothing to worry about (V vs. Some tires have speed ratings of W, 168 mph and Y, 186 mph. It is higher than the S Speed Rating, which is common on standard family cars, but lower than the H, V, and W Speed Ratings found. The other 92h codes on a tire are H, V, and Q. The Ultramax AS tire is an all-season touring tire engineered to deliver exceptional handling and all-season performance. H-rated tires can handle a maximum speed of 130 mph, while V-rated ones are good for up to 149. Here is the rating system used on different tires. The split siping design is also designed to improve wet and dry traction while the enhanced block rigidity is responsible for improving the steering stability and high-speed cornering of your ride. The speed rating is represented by a letter – A being the lowest and Y being. Find out if it's the right choice for your ride. The first is the speed rating. In comparison, V-rated ones extend the performance of tires up to 149 mph. So, if 98H. M 81 mph 130 km/h. Tyre speed ratings like H, T, V, VR, ZR, W etc. This rating system (see below) shows the top speed for which a tire is certified. , 104) tells you about the maximum weight your tire can safely carry (1984 lbs in this case). In our example above, the load index is 97 and the speed rating is S. There are no “I”, “O”, and “X” ratings. Can V-Rated Tires Go Faster than H-Rated Tires? V 149. The most common speed ratings are: • Q - up to 99 mph. H ratings). Certain sizes carry a W speed rating, which corresponds with a maximum speed of 270 km/h. H Speed Rating: 6 years and 75,000 miles treadwear warranty. In this article, we’ll provide an overview of speed ratings, delve into the characteristics of H. R 170km/h 4×4 & Bakkies Tyres. You certainly should feel a difference between those 2 ratings when cornering. 18 – Rim. For instance, S is equivalent to a maximum speed of 112 mph. SPEED RATING V. • S - up to 112 mph. For instance, when you see 94T, this means that the load rating is 94 and the T indicated is the speed rating. Typically, the Z, W and Y ratings appear on summer tires or competition. These tires are typically labeled as “performance tires”, and they are meant to provide superior handling and wet-weather traction due to the higher speed ratings (H=130 mph, V=149 mph). The first year of the purchase or first 2/32 inch of wear has a uniformity warranty. If you are purchasing tires for a vehicle that is used mainly for standard everyday driving, then you likely don’t need to buy an H or V rated tire.