Question: What Does The R Mean In Tire Size?

What does 70 R mean in tire size?

The number 235 is the cross-section width in millimeters, while 70 is the ratio of sidewall height to cross-section width (70 percent).

R means radial-ply construction and 16 is the wheel diameter, in inches.

Load index.

This number is based on the weight the tire can safely carry..

What does the 265 70r17 mean?

265. 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.

Are 50 tires wider than 55?

Not 5mm difference, 7.5mm if it matters to you. The “50 or 55” is the aspect ratio between width and sidewall not a direct measurement.

Can I use T rated tires instead of H?

T rated tires will be just fine for your car. IMO an H rated tire is overkill for your vehicle anwyay. This isn’t a vehicle that will be raced or do high speed chases for law enforcement or anything.

Which is better T or H speed rating?

H rated tires have stronger construction than T rated tires. The concern may not be speed although a Subaru can exceed 118 MPH hence those tires however it may be load rating of the tires. … Not only is the “T” rating good for 118 mph, it’s good for CONTINUOUS use at 118 mph.

Can I use 235 tires instead of 225?

Obviously, you will need a certain kind of tire depending on how you use your vehicle. Due to this, a 235 tire might not be better than a 225 tire, or vice versa, but depending on your situation, one tire might serve you better than the other.

Are 55 or 60 tires wider?

225mm (tire width) times 55% (aspect ratio) = 123.75mm (sidewall height). Rolling diameter = 16″ (406.40mm) plus 123.75 times 2 = 653.90mm or 25.744″. 205/60/16’s a tad over half an inch smaller rolling diameter than the 225/55/16’s.

How much bigger is a 285 tire than a 265?

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 larger 285/70R17 BFGoodrich All-Terrain T/A KO2 tire in the photo stands over an inch taller and is nearly an inch wider in total than the exact same model of tire in size 265/70R17.

Does speed rating matter on tires?

The speed rating tells you the speed the tire can safely maintain over time. A higher speed rating usually means you will have better control and handling at higher speeds – and that the tire can take the extra heat. As a general rule, tires with higher speed ratings also handle better at slower speeds.

How much wider is a 275 tire than a 265?

Plus Sizes265/70-17275/70-17Diameter inches (mm)31.61 (802.8)32.16 (816.8)Width inches (mm)10.43 (265)10.83 (275)Circum. inches (mm)99.29 (2522.07)101.03 (2566.05)Sidewall Height inches (mm)7.3 (185.5)7.58 (192.5)1 more row

Can I use 75 tires instead of 70?

70 or 75 in this case is the percentage of rubber height to section width. If the width is constant (i.e. 265) then 75 will be taller than 70. If you are lazy, use this calculator. About 3.5% larger between those two sizes so that’s how far off your speedo and odo will be.

Can I use 235 55r17 instead of 225 65r17?

Yes. For safety reasons be sure that the replacement tires are rated for both load and speed at or above the specifications for your Vehicle. Be sure to replace the tires in pairs on either the front or rear axles. Failure to do so could cause problems.

Can I use 225 65r17 instead of 235 60r17?

Both fit 17 inch rims, so one obstacle is out of the way. 235/65R17 has a sidewall height of 153 millimeters (65% of 235 mm), while 225/60R17 has a sidewall height of 135 mm (60% of 225 mm). … You are reducing sidewall height by 18 mm (about 3/4″), so your car will be lower by this amount.

Do wider tires slow you down?

Wider tires = more weight + more rolling resistance = slow you down.

What tire is wider 70 or 75?

a 215 will be a little wider and a little shorter, while a 225 will be even wider, and a little taller. 70 (or 75) is the ratio of the width to the sidewall height. So a 75 will be a taller tire, and closer to the height of the 6.70×15.

What is the difference between 265 70 and 265 75?

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.

Can I put 245 tires on 225 rims?

Can you put 245 tires on 225 rims? … As long as both of tires have the same diameter, you can use them. In this case the diameter is 18 for both.

What does 55 R mean on a tire?

In our example, the 55 means that the sidewall height is 55% of the 205-mm tread width. Construction. The letter following the profile height identifies the tire’s construction. Most tires sold today are an R, which means they are of radial tire construction.

What is speed rating R mean?

Speed rating R allows for speeds up to 106 mph (170 km/h) under optimal conditions. Like Q, R tires generally prioritize a particular function or unique performance over maximum speed capability.

Which tire is wider 50 or 60?

The smaller the number, the shorter the sidewall and the wider the tire. In other words, a 50 series tire is shorter and wider than a 60, even though they both might be 275’s or whatever.

Can I put 55 tires instead of 60?

If you use 55 instead of 60 your tires will be a little more low profile than normal. Yes, but rims size is the same (16”), which means that the tire will be a bit smaller in diameter since its wall is smaller. … Your tire sidewall would be a little thinner, and it might affect your speedometer accuracy.