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The Metric Tire Conversion Calculator converts metric tire sizes (ie 285/75R16) to standard tire sizes (ie 31x10.50R15) and standard tires back to metric. This easy to use metric conversion tire calculator is the fastest way to get the tire width, section height and overall diameter of your rims and tires so you can get the right wheels for your rig.

Metric to Standard Conversion
Enter the tire size below (ex 265/75/16)
/ R
Standard to Metric Conversion
Enter the tire size below (ex 31x10.50/15)
x R

 

SIEGE TEST DATA WILL GO HERE

Current Wheel Specs

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mm

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mm

New Wheel Specs

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mm

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Clearance Change

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0

mm

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mm

8 in

45 mm Offset

8 in

45 mm Offset

11 mm

27 mm

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Tire Size Calculator Test

Document

Input Tire Dimensions

This is the 3-digit number displayed after the intended use code (P, LT, ST, or T). For example: For P145/65R15, 215 would be the width in millimeters.
This is the 2-digit number before the "R" and after the "/". For example: For P145/65R15, the aspect ratio would be 65.
This is the final number after the "R". For example: For P145/65R15, 15 would be the diameter of the wheel the tire is designed to fit in inches.
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    Diameter
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    Width
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    Sidewall
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    Circ.
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    Rev./Mile

Alternative Sizes

Tire Code Diameter Tire Width

 

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Wheel Offset Calculator Test

Current Wheel Specs

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in

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mm

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mm

New Wheel Specs

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+ -

in

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+ -

mm

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+ -

mm


Clearance Change

Lorem ipsum dolor sit amet consectetur adipisicing elit. Amet consectetur tenetur repudiandae!

0

mm

Lorem ipsum dolor sit amet consectetur adipisicing elit. Amet consectetur tenetur repudiandae!

0

mm

8 in

45 mm Offset

8 in

45 mm Offset

11 mm

27 mm