What size tires does your car have? Mine has the 20 inchers. It calls for a cold air pressure of 32lbs. Mine also has the digital read-out. As delivered from the dealer, Left front was 31, Right front 27, Left rear 28 and Right rear 26. I now have 31 in both fronts and 30 in both rears. Anybody else notice how theirs arrived and what pressures are you running. The digital display makes playing with them easy.