I just put a 2" Maxx Suspension on my 08 Siverado and larger 18" tires. Max psi for the tires is 44. I'm running at 36". Does this sound about right? I also have Boss crome wheels on the truck which Iowa winters don't like. I'm going back to the factory wheels but I would like to change the center caps. Where can I find something else for my factory wheels. Thanks.