Insert your existing wheel and tyre specs, and the desired size, and 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
631.9mm
637.2mm
Circumference
1985.2mm
2001.8mm
Poke
46.9mm
51.6mm
Inset
130.9mm
151.6mm
Speedo error
0%
-0.83%
Reading at 30mph
30mph
29.75mph
Reading at 60mph
60mph
59.5mph
Ride height gain
0mm
2.65mm
Arch gap loss
0mm
2.65mm
Wheel Fitment Guide

Compared to your existing wheel, this new wheel will have an inner rim which is 20.7mm closer to the suspension strut. The outer rim will poke out 4.7mm 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.