9-3 Sedan, Cabrio '04+, Combi, 9-3X Workshop
Hi guys,
I have a 2003 Saab 9-3 Arc. 2.0T with the 16 inch alloy wheels. I would like to upgrade to the Vector/Aero wheels that are 17 inches. I have heard stories that I need to adjust or reset my speedo to keep up with the new change in diameter for the wheels. Is this true? If so, how do I...