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
583.1mm
595.5mm
Circumference
1831.9mm
1870.8mm
Poke
23.9mm
30.2mm
Inset
115.9mm
122.2mm
Speedo error
0%
-2.08%
Reading at 30mph
30mph
29.38mph
Reading at 60mph
60mph
58.75mph
Ride height gain
0mm
6.2mm
Arch gap loss
0mm
6.2mm
Wheel Fitment Guide

Compared to your existing wheel, this new wheel will have an inner rim which is 6.3mm closer to the suspension strut. The outer rim will poke out 6.3mm 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.