Insert your existing alloy wheel and tyre specs, and the desired size. The outcome is shown on the diagram.

Your existing setup

Existing Tyre
Existing Wheel

Your new setup

New Tyre
New Wheel
Your Results

Existing

New

Diameter
647.1mm
654.1mm
Circumference
2032.9mm
2054.9mm
Poke
49.6mm
63mm
Inset
153.6mm
153mm
Speedo error
0%
-1.07%
Reading at 30mph
30mph
29.68mph
Reading at 60mph
60mph
59.36mph
Ride height gain
0mm
3.5mm
Arch gap loss
0mm
3.5mm
Wheel Fitment Guide

Compared to your existing wheel, this new wheel will have an inner rim which is 0.7mm further away from the suspension strut. The outer rim will poke out 13.4mm more than before.

The strut shown in the diagram is for show only. Don't worry if the wheel looks like it fouls!

Bear in mind most tyre manufacturers vary slighty from the specs, and that it could be dangerous to run tyres on wheels they aren't designed to fit.


Will They Fit - The No.1 Online Alloy Wheel & Tyre Fitment Calculator

Use our comprehensive online wheel size calculator to visualise different alloy wheels and tyre combinations. Calculate your offset, compare tyre stretch, rolling radius and more. Compare your new and existing setup and our tool will show you key measurements for accurate wheel and tyre fitment.