Don't know that I've seen anybody give you any feedback on proper tire pressure. The 50 psig is definitely too much (MHO). And the label on the door panel is a little low for me (again MHO). I typically run 35-37 psig in all four tires. I get excellent tire wear and grip when driving somewhat aggressively is really good. Realize that both of these factors are tied to the specific tire you will be running.