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Tyre Calculator

Use the tyre size calculator to establish what size tyres you would require when upgrading in wheel size. The rule of thumb is to keep the percentage difference to within 2.5%

The rim width calculator allows you to work out what width of wheels can a certain tyre size go on to. This is usefull when purchasing new wheels and establishing whther your current tyres will fit.


Tyre Size Calculator (try to keep the radius within 2.5%).

Tyre Size to Compare

Diameter Circumference
Current mm % mm mm
New mm % mm mm
Difference % mm mm

Speedo reads 70mph your actual speed will be mph



Rim Width Calculator (Shows the rim width for any given tyre size).

mm %  = * to *


Another Tyre Size Calculator, more complex, works out the tyre size for you.

Current tyre size:

Show replacement tyre sizes that are:

Width: mm Width: from to mm
Profile: % Profile: from to %
Rim : inch Rim: from to inch
Code:

Difference should be % or less.





Possible tyre sizes:
Note, tyre sizes that are not made can be generated.

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