I'd like clarification as to the correct tyre pressure for my 2014 Jeep Cherokee. The plate on the door sill lists 33 psi as the recommended pressure. However when I recently had a puncture repaired the tyre dealer said they should be 38 psi. The tyres are 225x55 R18 and it's rarely used for any off-road travel. What pressure should I be using?
You should go with the tyre placard. That's the official figure from the company that designed and built the car.