~ Tyre Size Calculator ~


This should be of some use to somebody, after all, we all need wheels.
Choose your Tyre Sizes and it works it all out for you - Easy.

Original Tyre
Size

Width Height Diameter Overall Tyre Diameter
  mm   %   Inches   Inches   mm
New
Tyre
Size
  mm   %   Inches   Inches   mm
Difference in Diameter =  %    Actual =  mm