Originally Posted by Robstunner
Hey, i just bought SI rims, and i was wondering if i need to do a speedo recalc. THe SI's are 15", while the old stock steelies are 14". will i need to get one done, and if so, how much does this cost?
No. With larger wheels you will need lower profile tires (probably 55 for 14", and 50 for 15") so that the overall diameter of the tire remains the same.