[ckaul]

Hello. I have a 2012 528i xDrive base. I got 20" staggered rims (20x9F) (20x10.5R) with 245/35/20F and 285/30/20R. I have put these rims and tires on and everything is working fine because the tire sizes are within 1% of each other but I had a question about the tire pressure. The front tires are rated at 95Y XL and the rear tires are 99Y XL. What tire pressures should I be running? What should the load index of the tires be because the fronts are capable of up to 1521lbs with 42 PSI and the rears are capable of up to 1700lbs with 42 PSI. Currently I am at 37F and 40R but the front tires look like they need to be inflated more. I have gone up 3 inches in rim diameter and have wider wheels and the load ratings on the tires are different front to back now so the 35F/38R that the tire pressure sticker in the car says probably doesn't apply anymore. Someone have any idea how much PSI i should be running? Thank you in advance everyone.