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What Do The Tire Sizes 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.

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. The bigger the aspect ratio, the higher/taller the tire’s sidewall, or “profile” as it’s sometimes called. The aspect ratio is indicated on the tire sidewall as a percentage.

What does the 265 70R17 mean?

An arrow points to the numbers 265/70R17 115T on the inner part of the tire sidewall. 265 is the width, 70 is the aspect ratio, R stands for radial, 17 is the wheel diameter and 115T is the load index and speed symbol.

Can I use 235 tires instead of 225?

01. Are 225 and 235 Tires Interchangeable? Yes, they are. However, this is only possible if your car’s rims can accept the larger millimeter.

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.

Can I use 70 instead of 65 tires?

The higher the aspect ratio number, the taller the tire will be. Both 65 and 70 series tires can be categorized as all-season passenger tires, which generally have aspect ratios between 65 and 80, but a series 65 tire will give better response while a series 70 tire will offer a better, more comfortable ride.

Can I use 255 tires instead of 265?

255 is a better fit for the 8.5″ width rather than the 265. For those who like to ride on TOP!Mar 22, 2007.

What does 113 s mean on a tire?

113 is the load rating, it means the tires can handle up to 2535 lbs. S is the speed index, which means the tires can go up to a speed of 112 mph.

Which tire is wider 255 or 275?

The 275 is only 1/2″ wider but it will also weigh slightly more, height wise they are virtually identical. Assuming that you go with a 275 tire that has virtually the same type of tread pattern then you should not take much of a hit on fuel mileage, a little one but really not much.

What does the R stand for in tire size?

P identifies your tire as a Passenger Tire. 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.

Do bigger tires give a smoother ride?

Avoid bigger wheels if you want a smoother ride. As a general rule, bigger wheels result in a rougher ride. Switching to a smaller wheel and a thicker tire can give you a smoother ride without any major modifications to your car.

Are wider tires better?

Advantages. Larger tires improve handling and cornering, due to wider tread faces and stiffer sidewalls. Wider tires may decrease braking distances on dry pavement. Wider tires may also increase acceleration, especially in very powerful vehicles such as muscle cars.

How much taller is a 235 tire than a 215?

Tire size. The tire size is the width in millimeters from the edge of one sidewall to the edge of the other sidewall. Therefore, a 235 tire is 20 millimeters wider than a 215 tire.

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.

How much taller is a 65 tire than a 60?

The 65% aspect ratio (as in 235/65/17), compared to 60%, adds almost 12 mm (1/2″) to the radius of the tire (0.65-0.60)*(235mm)=11.75mm.

What does 60 R mean on a tire?

60 is the two-figure aspect ratio. This percentage compares the tire’s section height with the tire’s section width. For example, this aspect ratio of 60 means that the tire’s section height is 60% of the tire’s section width. R indicates the construction used within the tires casing. R stands for radial construction.

What does M’s mean on a tire?

149. All-Season Tires with Mud and Snow Designation. When a tire has M+S on it, that means that it meets the Rubber Manufacturers Association (RMA) guidelines for a mud and snow tire.

What is the difference between 265 70R16 and 265 75r16?

Going from 265/70 to 265/75 is increasing the height, or diameter, of the tire. The tire will be an inch taller. 265 is the width, so stock size is 265 millimeters wide. The speedometer will be a little off because the taller tire does not rotate at the same speed as the stock size.

Are 55 or 60 tires wider?

55s will be 3.4% smaller OD, so will spin faster at any given speed. e.g. travelling at a real 67 MPH, your speedo will show 72 instead of 70 MPH.

Can I use 75 tires instead of 70?

I think the 75 series tire is roughly 1″ taller than the 70 series. so 1/2″ more sidewall not a lot of difference. The 75 definately “looks” better and might even get ya better mileage as you’re not turning as fast.

Which tire is taller 255 or 265?

255’s are definatly taller. The 265’s looked real small with the lift. The 255’s fill it up better, and give more clearance.

How much taller is a 265 than a 255 tire?

It’s important to note that the outer diameter (how far the wheel rolls in one revolution) is slightly more for a 265 than a 255 at the same aspect ratio as the sidewall would be larger. 10mm bigger in width. The tread section width of the 265 tire is 10mm wider than the 255 tire.