How do you read tire parameters?

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 writing?

Starts here2:41Writing on the tire: How to read your tire’s text – YouTubeYouTubeStart of suggested clipEnd of suggested clip60 second suggested clipRatio is followed by a letter indicating the tires construction.MoreRatio is followed by a letter indicating the tires construction.

How do you read a truck tire code?

The numbers give the load rating for the tire, while the letter indicates the speed rating. Using P215/65R15 85H as an example, the 85 gives the load index, also called the tire ply rating, and the H is for the speed rating, which tells you the maximum speed at which you should use the tires.

How do you read a TYRE number?

205 indicates the section width of a tyre in millimetres. 60 is a tyre’s aspect ratio or profile which is its height from the base of the tread to the rim. This number represents a percentage of the tread width. For example, the height of this tyre is 60\% of its width.

What does Zr mean on tires?

Tire Speed Rating Chart For tires with a maximum speed capability higher than 240 km/h (149 mph), a “ZR” may appear in the size designation. Tires with a maximum speed capability higher than 300 km/h (186 mph), require a “ZR” in the size designation.

What do the letters stand for on tires?

The letter is the speed rating, or the maximum speed the tire is built for. As an example, a tire rated 90R could safely carry 1,323 pounds and travel at 106 mph. Consult a load and speed index to find out what your tire’s specific rating means.

What does BSW mean on tires?

Blackwall
B, BLK, BW, BSW = Blackwall or Black Sidewall. W, WW, WSE = Whitewall or White Sidewall. XNW = Extra Narrow White Width.

What does LR mean on tires?

When tires are changed a shop will mark them “LR,RR” etc.. I know that LR means Left Rear and so on..

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 does Zr mean on tyres?

ZR basically means the tyre is adapted for speeds above 149 mph. ZR tyres includes the speed ratings V(149mph), W(168mph) and Y(186mph).

Can I change my tire aspect ratio?

That said, the only dimensions you can change are the width and aspect ratio — never the wheel size, unless you buy replacement wheels — and you should always strive to keep the total height of the tire the same as the OEM. So, if you widen the tire, you may need to decrease the aspect ratio, and vice versa.