【How-to】How to read a tire

What do the numbers 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.

How do you read a tire?

What does the 265 70R17 mean?

How to read your tire size long description. 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.

What do tire numbers and letters mean?

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. In our example, a load index of 92 means that the tire can support 1,389 pounds at maximum air pressure.

What does XL mean on a tire?

XL tyres have been especially developed for use with heavy loads. Generally speaking, the tyre name XL is used for heavy duty tyres. However, the labelling varies between tyre manufacturers. Sometimes you might have XL tyres that are also labelled “reinforced” (RF or RFD), or models labelled EL (Extra Load).

What does LT mean on a tire?

Light Truck

If a tire size reads, LT235/75R15 104/101S, the LT indicates that this tire is meant for Light Truck use. These tires are made for light-duty and heavy-duty pickup trucks (typically ½ ton, ¾ ton, or 1-ton load capacity), SUVs and vans.

Can I use 235 tires instead of 225?

235 tires are one of the strongest, most durable, and reliable tires available for sub-heavy vehicles. 235 tires are also preferred over 225 tires for professional stunting because they offer much more stability to the vehicle and hence are much safer.

What does 255 mean on tires?

255 (Tire Width): The tire width is 255 millimeters from sidewall to sidewall (just over ten inches). 45 (Aspect Ratio): The tire’s sidewall is 45% of the tire’s width, which means the sidewall is about 114 millimeters or just over 4 inches.

What does LT265 75R16 mean?

This formula is a quick way to get the tire diameter of those metric tires that are common on just about everything stock. For example a LT265/75R16 would be around 31.6 inches tall and 10 inches wide. … “LT” means Light Truck and “P” means Passenger tire. The bigger number (on the left) is the Section Width.

Are all LT tires 10 ply?

LT tires are usually 8-ply (Load Range D) or 10-ply (Load Range E). Passenger Tires usually have a 4-ply or 6-ply equivalent sidewall. … Tread-wear or tire mileage is typically about the same for LT and P-metric tires, except if used often on gravel roads.

Do LT tires ride rough?

LT tires are built for heavy vehicles, so their stiffness can give your vehicle a harsh ride, and since they require higher tire pressure, they can throw off your vehicle’s TPMS (Tire Pressure Monitoring System, a safety feature that alerts you to improper pressure in your tires).

How big is a 265 75R16?

Plus Sizes

	265/75-16	285/75-16
Diameter inches (mm)	31.65 (803.9)	32.83 (833.9)
Width inches (mm)	10.43 (265)	11.22 (285)
Circum. inches (mm)	99.43 (2525.53)	103.14 (2619.77)
Sidewall Height inches (mm)	7.82 (198.75)	8.42 (213.75)

What does lt225 75R16 mean?

This number indicates that your tire has a width of 225 millimeters. 75. This number means that your tire has an aspect ratio of 75%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 75% of the width.

What size is a 245 75R16 tire?

Tire calculator

Parameter	Old	New
Overall diameter:	804 mm	774 mm
Section width	265 mm	245 mm
Circumference	2526 mm	2431 mm
Sidewall height	199 mm	184 mm

What does the 75r on a tire mean?

This number means that your tire has an aspect ratio of 75%. In other words, your tire’s sidewall height (from the edge of the rim to the tire’s tread) is 75% of the width. In this case, the sidewall height works out to be 198 millimeters. R. This letter denotes how your tire was constructed.

Can I use 245 tires instead of 265?

Yes you can replace 265 with the 245 size tire. Since this tire size is optional and for the truck, you will have no problems with it. And your fuel economy may suffer a little due to the very weight of the tires and the best gripping power.

What is a 285 75R16 equivalent to?

P-Metric Tire Sizes – P-Metric to Inches Conversion Chart

Rim Size	P-Metric Size	Actual Tire Height
16 Inch	245/75R16	30.5 inches
	265/70R16	30.6 inches
	265/75R16	31.6 inches
	285/75R16	32.8 inches

What does the 265 mean?

265 = Section Width in millimeters (measured at the widest part of the tire from sidewall to sidewall) /60 = Aspect Ratio or section height to width ratio as a percentage. For this example, the side wall is 60% of the section width of the tire (265mm x .

What does r22 mean on a tire?

D. Diagonal. 22. The tire size was designed to fit rims or wheels that are 22 inches in diameter.

What does tire size mean P275 55R20?

The same 2014 Ford F150 in their Platinum Series comes with a tire size of P275/55R20. The tire is a (P) passenger tire, with a tread width of 275 millimeters, the sidewall is 55% as tall as the tread (section width) is wide, and the wheel diameter is 20 inches.

What is 70R17?

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.

What does 115T mean on tires?

4ply standard load sidewall

The 115T signifies that the tire has a 4ply standard load sidewall. The 121S signifies a 10 ply load range E sidewall. The standard load tire is best for a half ton truck, whereas the load range E sidewall is best for a 3/4 and 1 ton truck.

How many inches is a 325 tire?

325/65R18 tires have a diameter of 34.6″, a section width of 12.8″, and a wheel diameter of 18″.

What size tire is lt275?

275/70R17 tires have a diameter of 32.2″, a section width of 10.8″, and a wheel diameter of 17″. The circumference is 101.0″ and they have 627 revolutions per mile. Generally they are approved to be mounted on 7-8.5″ wide wheels.

What size is 265 70r16?