Readers ask: What Do Numbers Mean On Tires?

What do the 3 numbers mean on tire size?

B: TIRE WIDTH The three-digit number following the letter is the tire’s width (from side to side, looking at the tire head on) in millimeters. It’s the height of the sidewall measured from wheel rim to top of the tread, expressed as a percentage of tire width. In other words, it’s sidewall height divided by tire width.

Can I use 60 instead of 65 tires?

Physically, yes they will fit. It is recommended to stay within 3% of the original tire size on the car though. The size you have is 3.09% smaller, so not recommended. You could go with 205/60-15 though if you can get a better deal on that size.

What does the 265 70r17 mean?

This number indicates that your tire has a width of 265 millimeters. 70. This number means that your tire has an aspect ratio of 70%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 70% of the width. In this case, the sidewall height works out to be 185 millimeters.

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What does 121 118R mean on tires?

90S, 95T, 121/118R, etc. These digits after the tire size, 90S in this example, are the “load index” and “speed rating”. That just means that the maximum pressure on one tire is higher than the other. However, this again is only at maximum pressure which is more than you would usually use.

Can I use 235 tires instead of 225?

Yesthat size will work 100% perfectly, as it is the exact same diameter as the 225/75-16. 235/70-16 is actually a shorter tire.

How tall is a 17 inch tire?

17 INCH TIRES TIRE HEIGHT
225 35 17 23.20
245 35 17 23.75
315 35 17 25.68
335 35 17 26.23

What does the 65 mean on a tire?

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.

Are 60 or 70 tires wider?

Generally speaking, a 215-60 series tire is wider and has a shorter sidewall then a 215-70 series tire would be and a 215-75 series tire would be taller and narrower then either the 70 series or the 60 series.

Are 70 or 65 tires wider?

The main thing is that the 70 is a little taller than the 65, width is the same.

What’s the difference between 265 and 285 tires?

The larger 285/70R17 tire in the photo above stands over an inch taller and is nearly an inch wider than the 265/70R17 size. The width of the tread is also a half-inch wider. Many late-model domestic trucks accept this difference in size.

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What is the difference between 225 and 265 tires?

The first numbers is the distance across the tire. The 265 would be 40 mm wider than the 225. Be careful to make sure the diameter of the tire is the same with the different size tires. 265 is more broader tyre.

Are wider tires better?

From a safety point of view, both types have their good sides: On a dry road, wider tires will offer more grip than narrow ones, but the risk of aquaplaning will be higher with wide tires. – In the winter, narrow tires are better under extreme conditions as they provide higher surface pressure against the road.

Should I get H or T rated tires?

Tires with higher speed ratings generally have better steering response and cornering grip than lower-speed rated tires, in addition to being capable of higher speeds. So if your car originally came with Hrated tires, that’s what you should replace them with. Sticking with Hrated tires comes at a cost.

Is Load Index 121 a 10-ply tire?

Therefore load range simply tells how tough the tire is and the allowable PSI. For example, an “E” load range indicates that a tire is equivalent to a 10ply construction tire. In realitly, this tire is not built with 10 plies, but rather one or two plies of equivalent strength.

What does 10 PR mean on a tire?

“Q” refers to the tire’s speed rating. In this case, the tire is rated at 99 mph for continuous use. The higher the letter, the faster the tire is rated to travel. 10 PR refers to the ply rating of the tire. A 10-ply rated tire is the same as a Load Range E tire.

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