Tire Size

Reply Subscribe

Thread Tools

Search this Thread

Aug 16, 2004 | 04:18 PM

mjninke

Thread Starter

Senior Member

Joined: Jul 2004

Posts: 242

Likes: 0

From: Saginaw

Tire Size

I have the 18" Goodyear Tires LT275/65Rx18 OWL All-Terrain to be exact... What size are these? 31's 33's, and is there a formula to figure that out???

Aug 16, 2004 | 04:35 PM

dzervit

Senior Member

Joined: Apr 2004

Posts: 4,424

Likes: 0

From: Motor City

Dunno the formula... but this tool does it all!

http://www.miata.net/garage/tirecalc.html

Aug 16, 2004 | 04:39 PM

mjninke

Thread Starter

Senior Member

Joined: Jul 2004

Posts: 242

Likes: 0

From: Saginaw

Thanks

Thanks DZ...

Looks like 32's.... Not bad for stock!

Aug 16, 2004 | 10:23 PM

dmitry

Member

Joined: Jul 2004

Posts: 74

Likes: 0

Re: Tire Size

Quote:

Originally posted by mjninke
I have the 18" Goodyear Tires LT275/65Rx18 OWL All-Terrain to be exact... What size are these? 31's 33's, and is there a formula to figure that out???

The first number is the width of tire in mm, second number is the aspect ratio, and last number is the wheel diameter:

275 / 25.4 = 10.8 inches (width of tire)
10.8 x .65 = 7 inches (sidewall of tire)
7 x 2 + 18 = 32" (tire diameter)

Aug 17, 2004 | 11:05 AM

Zinc001

Member

Joined: Nov 2002

Posts: 52

Likes: 0

From: Alberta

Last edited by Zinc001; Aug 17, 2004 at 11:09 AM.

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last