I have a 2015 grand Jeep Cherokee. It originally had Goodyear 17” with recommendation of 33psi. I upgraded to a nitto 20” and the tire says max 50 psi. How do I know how much air to put in?
Depends on what type of driving you plan on doing. If you're planning on just doing city driving, the recommended tire pressure is between 30 -35 psi. Please note, that your tire pressures will fluctuate slightly depending on the weather outside so you may need to top up again once the weather cools.