tire pressures needed for 275/40/17 front and 315/35/17 rear

Running 30lbs front and rear.

yeah i run about 32 in mine

editL stupid me i forgot u had 17s.... dumb ass!

My 1994 GT had the stock Tri-Bars on it when I bought it with the stock 245/45R17 tires. The door tag and owners manual said to run both front and rear tires at 30psi.

I kept the tires at the 30psi and noticed that when I was going to a different wheel and tire combo, the front tires were worn on the outside (indicating under-inflation) and the rear tires were worn on the inside (indicating over-inflation). Given the weight distribution of our cars, I wasn't over surprised. I don't think that rotating the tires more frequently is an appropriate solution (especially for guys who stagger tire size).

I run 275/40R17's all around now on 17x9" wheels. I run the fronts at 32psi and the rears at 28psi and they wear nice and evenly.