Metric tire calculator!

http://www.redrock4x4.com/tireconve...h=12.50&stxtRim=16&submitButtonName=Calculate

this is a good one that doesnt beat around the bush tryin to sell you tires

if you wanna know how the metric system works:

ex-285/75/16

1st number: tread width in millimeters (285mm)
2nd number: sidewall height as a percentage of width (285x.75=sidewall height)
3rd number: rim size

tire diameter=3rd number x 2(2nd number)

285/75/16=32.8/11.2/16 or reasonably speaking 33/11/16.

 

nice also one at http://www.4lo.com/calc/gearmetric.htm

 

i used this one it can convert both ways and then you can also check gear size

http://www.dakota-truck.net/TIRECALC/tirecalc.html

 

Good find Raptr, thats the on I have been using for a while

 

There is also a Iphone app called tire math. It does gear ratio, speedometer, odometer, and tire converter