MFL wrote:
way2roll wrote:
Not to hijack the OP's thread, but in the same line of thinking - should I adjust my tires on my SRW truck when not towing? 80PSi rides like a dream with the FW hooked up but bounces around quite a bit when empty.
I should have answered OPs question earlier, instead of off topic, but same answer here too. Yes, lower the psi when not towing. A DRW starts out with less when loaded, and can go lower than SRW, when unloaded due to 4 rear tires vrs 2. On my truck, F250, door sticker psi 75 front 80 rear, but when not towing I run 65 psi in rear. It makes a huge difference in ride quality.
My 250 actually has, was ordered with, 350 suspension.
Jerry
And you’re still way over the required pressures front and rear for driving empty.
Of course smaller tires will need more pressure for the same capacity as a larger tire, but using the typical HD diesel srw truck. They all are similar in weight.
Stock size tires (275-285 wide something or others), empty pressure Front, 50-60 psi depending on handling characteristics and traction you want . Rear, 35-40 psi.
Bigger tires, even less. 37-12.50s on our current diesel truck. Being it’s winter time AND I’m trying to correct the over pressure center tread wear from the previous owner, I’m at like 40 psi front, 30rear. It doesn’t drive squishy. Summer time I’ll put a little more in them to combat heat and friction due to the change in road conditions.
New half ton crew cab, I’m running 38/32 in 275-65-18 tires vs the 45psi all around that it come off the dealer lot with. Rides nicer, better wet road traction and will wear better than being over inflated for the load.
Anyone riding around with rock hard tires when they’re not needed should take the 5 minutes to air them down correctly. It’s like a free suspension and traction upgrade.
Different story if you’re hauling a lot of the time. I don’t change tire pressure daily. If I’m hauling the camper in the summer I’ll leave the rears aired up between trips. Unless I’m going on a on empty road trip and wish to keep my teeth and spleen in tact!