The 163s always had really high pressures "off the truck", probably due to the winching down they had to do on the car haulers. Some of the guys where I worked were really lazy on dropping the pressures down. They were sometimes so high it was easier to just pull the valve core out for a number of seconds to get them somewhat down to where they should be, then checking. Otherwise you were standing there a LONG time trying to just bleed the air out with a pressure gauge. I do remember a case just like you were talking about, tire pressures didn't seem to have been checked at all on PDI. Rock hard ride. And the PDI guy did a road test like that?
Gilly
PS: Oh, but he DID drop the spare down to 32............(60 psi compact spare)
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