Tire Sizes: Descriptions, Conversions, and Chart

[AJeepZJ]

25-31" Tires

15" Rims

215/75/15 = 27.7” x 8.5”

225/70/15 = 27.4” x 8.9”

225/75/15 = 28.3” x 8.9”

235/75/15 = 29.0” x 9.3”

245/75/15 = 29.5” x 9.6”

255/75/15 = 30.0” x 10.0”

265/75/15 = 30.6” x 10.4”

16" Rims

205/85/16 = 29.7” x 8.1”

215/75/16 = 28.7” x 8.5”

225/70/16 = 28.4” x 8.9”

225/75/16 = 29.2” x 8.9”

235/70/16 = 29.0” x 9.3”

235/85/16 = 31.7” x 9.3”

245/70/16 = 29.5” x 9.6”

245/75/16 = 30.5” x 9.6”

255/70/16 = 30.0” x 10.0”

265/70/16 = 30.6” x 10.4”

265/75/16 = 31.6” x 10.4”

275/70/16 = 31.2” x 10.8”

17" Rims

245/70/17 = 30.6” x 9.8”

265/70/17 = 31.6” x 10.7”

18+" Rims

32-33" Tires

15" Rims

16" Rims

255/85/16 = 33.0” x 10.0”

285/75/16 = 32.8” x 11.2”

295/75/16 = 33.4” x 11.6”

305/70/16 = 33.0” x 12.2”

375/55/16 = 32.8” x 15.5”

17" Rims

255/75/17 = 32.06" x 10.03"

285/70/17 = 33.0” x 11.2”

295/70/17 = 33.3" x 11.6"

18+" Rims

275/65/18 = 32.1” x 11.0”

325/60/18 = 33.2” x 13.3”

375/50/18 = 33.0” x 15.4”

325/50/20 = 33.0” x 13.2”

34-35+" Tires

16" Rims

315/75/16 = 34.8” x 12.9”

395/70/16 = 37.9” x 16.0”

17" Rims

315/70/17 = 34.9” x 12.9”

18+" Rims

305/70/18 = 35.0” x 12.2”

325/65/18 = 34.8” x 13.5”

375/60/18 = 35.7” x 15.5”

395/65/18 = 37.8” x 15.7”

[Matt]

Great thread!

Also, here's a trick for converting metric sizes to standard.

As mentioned, for the width you just divide the first number by 25.4. So a 265/70/17 is 265/25.4= 10.4" wide.

For the height you do the following:
First number x second number / 1270 + third number
example: 265/70/17 is
265 x 70 / 1270 + 17 = 31.6 inches tall

So: 265/70/17 = 31.6x10.4

[Omelet]

You left out 295/70/17 = 33.3" x 11.6"

I usually just use this:

http://www.therangerstation.com/tech...nch_Tires.html

[AJeepZJ]

lol, I didn't 'leave' it out... I just added the most popular sizes. Gonna add it in though