General rule for tire pressure?
I know the best answer is going to be "take everything to scales and check the pressure charts"....but is there a general rule of thumb if this can't be done? Thanks
Forum Discussion
My camper trailer is tandem axle, with load range D Kumho 857 radial tires. The actual load on the tires is 3500 pounds. The rated load capacity of the sum of the four tires is 7496 pounds, meaning I am running at only 47% of the rated weight load.
In theory, since I run 65 psi ( max sidewall pressure ) I should be seeing a wear pattern that would indicate "overinflation". That is not the case however. I now have almost 15K miles on them, and all four tires are wearing perfectly even ( they have used approx 2/32" tread from new ).
I can't address whether the truck and trailer would stop shorter, longer or the same with different inflation pressure, because I have not tested it, nor do I have a good way to do so. I do know the brakes on this trailer are capable of locking the tires, because I have to use less than maximum setting on the prodigy brake controller.
To the original question of this thread, for one of my trucks ( the Nissan ), pulling the little camper, the door sticker says 35 psi. I run 35 in the front, and 38 in the rear when towing.
On the other truck ( F350 dually ) I run door sticker pressure ( 75 front, 60 rear, and these are LR E tires, 80 psi max on the sidewall ) all the time, towing or not.
On all my trailers, I run max sidewall pressure, which is 65 for the LR D tires and 80 for the LR E tires.
In theory, since I run 65 psi ( max sidewall pressure ) I should be seeing a wear pattern that would indicate "overinflation". That is not the case however. I now have almost 15K miles on them, and all four tires are wearing perfectly even ( they have used approx 2/32" tread from new ).
I can't address whether the truck and trailer would stop shorter, longer or the same with different inflation pressure, because I have not tested it, nor do I have a good way to do so. I do know the brakes on this trailer are capable of locking the tires, because I have to use less than maximum setting on the prodigy brake controller.
To the original question of this thread, for one of my trucks ( the Nissan ), pulling the little camper, the door sticker says 35 psi. I run 35 in the front, and 38 in the rear when towing.
On the other truck ( F350 dually ) I run door sticker pressure ( 75 front, 60 rear, and these are LR E tires, 80 psi max on the sidewall ) all the time, towing or not.
On all my trailers, I run max sidewall pressure, which is 65 for the LR D tires and 80 for the LR E tires.
