Sean Harvey

Question 2016 chevy silverado 1500 ltz- 305/50/R20 120V toyo proxies S/T on 20" aftermarket vision rims. What should the proper inflation be for the front and the back for the best mileage. When bought from dealer 42psi all around. Usually I would go with the manufacturer spec which is 32psi front and 32 psi rear. What do you guys think. I feel as if they're over inflated and looking for advice. Thanks and I hope to get an answer soon.