You may be right but the overall diameter of the stock 215/50/16 tires is 24.3" while that of the 225/50/16 tires is 24.9" (unloaded), a difference of 0.6" in diameter or 0.3" in radius. This should, in principle, affect the height of the ride by an amount smaller than 0.3" when the tires are loaded. Am I wrong?