How does one go about determining the correct tire pressure when the label is missing from the B post?
I run mine at the max pressure listed on the sidewall of the tire. This way you can support the max load. If you have a tire inflated for X weight and happen to go over that weight then the tire is underinflated and underinflated tires make more heat and more heat causes tires to blow. My tow vehicle tires run at max pressure all the time, loaded or unloaded. Some people reduce the tire pressure when not towing so it will be a smoother ride, etc... I dont have time to fiddle around with inflating all of them when I want to hook up to something and go.
I've run all my vehicles and trailers this way for many years, drove and towed many miles and never had a tire fail or wear out prematurely.
I always ran my smaller pop-up tires at labeled pressure. I don't carry a lot of cargo, so the trailer would actually be pretty lightweight. I had a friend borrow the camper and told me it was 'too bouncy' and to let out some air. I told him "nope. Not playing that game of 'figuring less air for less load" I went with what the tire stated, period. Told him when he buys the tires, he can run them as he wished.![]()
How does one go about determining the correct tire pressure when the label is missing from the B post?