Maxing out tire pressures...
I've read in a couple of places that to improve the ride some people "ignore" the tire pressure recommendation inside the door and inflate their tires, (often just the rear), to the max inscribed upon...
Forum Discussion
op says wrote:
I'm towing with an F-150 SCrew, with factory towing where the door indicates 35psi while the tire states max inflation is to 44psi. I've experienced some bouncing on rough roads but a nice towing experience on smooth blacktop. I'm taking a longish trip through four states where only one of which has any reputation for good roads, (MI, IN, IL & WI - you decide).
Would I benefit from taking all four tires to 44psi, just the rears to 44 psi or should I, (for safety's sake), leave everything at 35psi per the door and take the pain.
Part of the problem is listening to comments from folks with 3/4 and one ton trucks hauling close to FAWR/RAWR with their high pressure LT E tires vs your low pressure 35-44 Psi P tires. Apples vs oranges. 35-44 psi are very low pressure and makes for a soft tire so the 44 psi will have less parasitic drag and get the best mpgs from the tow vehicle.
My wife has a 1/2 ton crew cab 4x4 chevy that came with P265/70-17" tires. Door tag says 35 psi all around which I've found rides good but the front tires were wearing the corners badly. We live rural and no city driving.
I've found using a full 44 psi in the rear when loaded has had the best results for handling/fuel mileage and tire wear. I air down to 35 psi when not towing or carrying a load.
Fronts worked best at 40-42 psi as loads on the front axle doesn't change with a GN or bumper trailer.
Your truck will weigh different and may have a different size tires so one size (psi numbers) doesn't fit all here.
