It's important to keep to the cars original tyre circumference, what we do is fit larger alloy wheels and a smaller profile tyre to compensate, otherwise gearing, speedo, engine management could be affected, this tool can be used to ensure this. Can also be used to find cheaper alternative sized tyres, therefore saving you money.
20" Calibre Altus Silver
18" BBS CH Satin Black Stainless Steel Lip
19" Quantum44 S1 Matt Gunmetal Wider Rears