I noticed recently that the tires fitted to the front of my Coupe are the wrong size: Should be 225/40 R18 but they are 255/35 R18 (same width and aspect ratio as the rears). There is still plenty of tread left on the tires so I don't want to replace them unnecessarily and, due to the smaller diameter, I could not use them on the rear. My question is this: What should I set the tire pressures to? The book/door sticker says 32psi on the front, but that is for the recommended tire size. The ride is very firm and steering slightly vague (when compared to my FWD Renault Megane!) Any comments/suggestions would be welcome. I love the car by the way!