Quote:
Originally Posted by OldGuy
But now I'm going to say the dealership set those pressures at 40 not out of incompetence but for a reason.
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Cause they couldn't read the door Jamb sticker?
Seriously, most car and tire combination's have a sweet spot they work best at. Different tires than engineered and spec'd on the car may have softer or stiffer sidewalls that may require a change in the pressures. IMO the factory recommendation with these tires are pretty spot on. Raising them to 40 will result in a reduced contact patch, sketchier braking and traction, and odd tire wear patterns.
The Tyre Bible is always a good read if you haven't done so:
Car Bibles : The Wheel and Tyre Bible Page 1 of 4