It is not the rim size but the overall rolling diameter of the tires. Plus sizing is when you go from a 205/60/15 to a 205/50/16. The rolling diameter is similar due to the shorter sidewall of the tire. I have 225/45/17's on mine and the speedo is only 5% off as the rolling diameter is only SLIGHTLY taller than the stock combo.


Andy V. 99 SE Sport SGTO KKM,No Res,Dual exh. 17 Cellos-225/45/17 Sumitomos Knauberized,Rousch springs, Drilled rotors vannanthony@hotmail.com Semper Fidelis