any ideas of how to adjust the speedo cus since i have bigger alloys the speedo says im doing 50 when actually i am doing about 56 ( i did various different test which included diving along side m8s in diff cars to figure out this exact speed ) which is a big difference specialy since there are loads of speed camaras in the area 
any help how hoe to sync the speedo with how fast my car is acctualy going would be top stuff!
any help how hoe to sync the speedo with how fast my car is acctualy going would be top stuff!
