What happens if I change my wheel size?

Many car owners can change to a larger wheel size.  Increasing the size of your wheels can help to improve the look and impact of your wheels - making them even more attractive on your car.

Changing within the same rolling radius of your current wheel

“Up stepping” as it is known, is acheived by increasing your wheel size while reducing the profile of your tyre.  This ensures that the “rolling radius” of the new wheel and tyre remains the same as the original.

Benefits – Up stepping should improve the handling of your car. Each step will reduce the proportion of flexible tyre 'sidewall' to rigid alloy. This will improve response, will help keep the tyre tread square to the road and will improve your car's 'feedback'.

Disadvantages - In the majority of situations, tyre inches are lighter than wheel inches. Plus-sizing can make your overall wheel/tyre package heavier. Reducing the profile of your tyres will also reduce your car's damping deflection under compression ie the comfort of the ride could deteriorate.

Changing the wheel and tyre so that it is different to the current rolling radius

If the rolling radius is larger, you will need to get your speedometer recalibrated . Bigger wheels are often heavier so you should compare the weights of alloy wheels with the standard wheels you have.  A bigger wheel can resist a change of direction so handling can be slightly affected.
Kwik Fit as a policy will not sell or fit wheels or tyres that are bigger than your manufacturer recommends.