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Also known as the service description, the number indicates the maximum load the tire can support when inflated properly, and the letter represents the maximum speed capability of the tire. Multiply that by four tires (4 x 1,389 = 5,556 pounds) to get your vehicle’s maximum load-carrying capacity.
What does the T or H mean on tires?
The “T” or “H” on tires pertain to their speed ratings. A T-rated tire can withstand top speeds of up to 118 mph (190 km/h), while an H-rated tire can support up to 130 mph (210 km/h). It is important to note these markings and stay within those speed limits.
What do the numbers and letters mean on a tire?
The number is the load rating, or the amount of weight that it can handle. The letter is the speed rating, or the maximum speed the tire is built for. Consult a load and speed index to find out what your tire’s specific rating means.
What does B stand for on tires?
R indicates the construction used within the tires casing. R stands for radial construction. B means belted bias and D stands for diagonal bias construction. 17 The last dimension listed in the size is the diameter of the wheel rim, which is most often measured in inches.
What does the letter at the end of a tire size mean?
Typically found last is the letter that indicates the speed rating, also known as the maximum service speed. The simplest way to define speed rating is the fastest speed a tire can handle before it no longer performs as designed.
Which speed rating is better H or T?
A speed rating of T indicates that the tire can be safely driven up to 118 mph. A tire with an H rating has a higher limit — 130 mph — which means it can be safely driven faster than the tire with the 94T code. Tires with an H speed rating are often mounted on sport or sport sedan cars.
What does 85T mean on tires?
MRF ZTX 165/80 R14 85T Specifications 85 is the load index i.e. the maximum weight each tyre can carry at full speed. T is the speed rating i.e. the maximum speed for the tyre at full load.
Can I use 60 instead of 55 tires?
Most likely yes. The 55 or 60 in this case is the aspect ratio. It’s how tall the tire is as a percentage of its width. A 60 means the tire’s sidewall height is 60% of the width of the tire.
What does P215 65r15 mean?
The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire’s width. The bigger the aspect ratio, the bigger the tire’s sidewall will be.
How do you read tire letters?
TIRE SIDEWALL MARKINGS P =Passenger Car Tire. The first letter on a tire indicates the tire’s class. 245 =Section WidthTread (mm) 45 =Aspect Ratio. Z =Speed Rating S = 112mphT = 118mph. R =RadialConstruction. 19 =WheelDiameter(inches. 98 =LoadIndex. W=Speed Rating.
What does RBL mean on tires?
RAISED BLACK LETTERS Sidewall Marking Meaning ORWL OUTLINED RAISED WHITE LETTERS OWL OUTLINED WHITE LETTERS RBL RAISED BLACK LETTERS RWL RAISED WHITE LETTERS.
What does E1 mean on tires?
Load Range and Ply Rating E1 10 @ 80 PSI E2 10 @ 65 PSI F1 12 @ 95 PSI G 14 @ 110 PSI.
What does Zr mean on tires?
Tires having a maximum speed capability over 149 MPH may have “ZR” in the size designation. Tires with a maximum speed capability over 186 MPH are required to include “ZR” in the designation. Below are examples of tire sizes with a “ZR” speed rating.
Which tire is the LR?
When tires are changed a shop will mark them “LR,RR” etc.. I know that LR means Left Rear and so on..
Can I use 245 tires instead of 235?
So you have already identified the difference between 235 and 245 size tires. It is obvious that 245 is bigger than 235, still, both tires’ sizes are pretty common and could be interchangeable at times.
Can I use 225 tires instead of 235?
Can 225 fit 235 tires? Yes, they can. 225 tires are 10 mm narrower and 15 mm lower in height than the 235 tires. Besides, 235 tires are wider than 225, and so we recommend checking the owner’s manual.
Do higher speed rated tires wear faster?
You will gain nothing in any other aspect of the tire, such as tire life, treadwear, or what have you. In fact, the higher speed rating doesn’t have much to do with cornering ability, either. Just the speed factor of the tire itself. There is no relationship between the speed rating and the longevity of the tire.
Does tire speed rating affect ride quality?
Speed Ratings Refer to More Than Just Speed Speed ratings affect more than just speed, they also contribute to ride comfort, wear, and cornering capabilities. In general, the higher the speed rating, the better the grip and stopping power, but the lower the tread life.
What does 75t mean on a tyre?
Radial construction.R stands for radial-ply construction. 387. 387 is the load index i.e. the maximum weight each tyre can carry at full speed. T is the speed rating i.e. the maximum speed for the tyre at full load.
What is the meaning of 175/65 R15?
175 is the width in millimetres of the tyres cross section. 65 is the Aspect Ratio, it is the ratio of the sidewall height to the cross section width. 15 inches, stands for the diameter of the wheel that the tyre is designed to fit. Radial construction.R stands for radial-ply construction.
What speed rating is W?
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).
What does 70 mean on a tyre?
What is the tyre load index rating? LOAD INDEX KG MAX. LOAD PER TYRE 68 315 69 325 70 335 71 345.
Which tire is wider 50 or 60?
For example, a 60-series tire features a sidewall that is 60% as tall as the tire’s section width. A 50-series tire will feature a shorter sidewall, at 50% of section width.
What does r16 mean on a tire?
65 – This number is the Aspect Ratio, the ratio of sidewall height to width. R – Radial. 16 – This number designates the tire’s diameter in inches (i.e. 16″).
Which tire is wider 45 or 50?
got that 1 wrong, the 45 and 50 is a percentage of the width, so the difference between 45 and 50 profiles is 5% of the width.
