Alternative tyre sizes of a different size from the manufacturer's original fitment size that can be fitted to your car. The outside diameter of a replacement should not differ by more than +1.5% or -2% from the original size. Otherwise the tyres may not fit the car body.
You can check the size of the alternative sizes using our tool.
Oponeo recommends fitting a standard size for a specific vehicle, therefore always consult a tyre specialist when choosing a tyre size other than that homologated by the manufacturer.