Okay, they other day I loaded my trailer and I noticed the tire was a bit low. Since I didn't have air at the time, I went ahead and loaded it up. Then, afterwards, I went to get some air. Okay, here's my question: Should the air pressure in a trailer be measured when the trailer is empty or full? When full, there is more wieght on the tire, which equals increased pressue. So, what is the best time to check? I know when you check the pressure in a vehicle you do it on the ground under normal conditions. For reference, I lifted my trailer tires & filled to the recommeneded max limit of 50. Then lowered the trailer down and rechecked. The rear axle was 56 lbs & the front 62.
Hmmmm well I don't know for sure wich way is the 'best' way but I like to 'top off' my airpressure before loading. I have airbags on my towrig and when I load my truckcamper in the back just the weight will make my bags jump from 15lbs to like 28-30 so your thoughts are valid....
I always check/adjust the pressures when I'm loaded. The tire pressure listing is for the tires load rating. So lets say you have a 2 axle, 4 tire, 10K trailer loaded and the tires say load rated 2500 lbs. @ 65 PSI then load the trailer to 10K, and adjust the tires to 65.
[quote='05 2500HD]I always check/adjust the pressures when I'm loaded. The tire pressure listing is for the tires load rating. So lets say you have a 2 axle, 4 tire, 10K trailer loaded and the tires say load rated 2500 lbs. @ 65 PSI then load the trailer to 10K, and adjust the tires to 65.[/quote] That actualy makes mucho sense. I was going to call the trailer dealer, but I hadn't gotten a chance.
Ya I agree that does make more sence...I think I will check pressure after I load up and see how much of a diff I have....waytogo
just becareful when adding gas station air as it may have water in it and dont forget the effects of the road and the outside air temp when setting pressure
I'm traveling with a 11 gallon tan that will have 125 psi when I leave town. I also have a travel/emergency pump that hooks to cigarette lighter & will pump to 200 psi. I should be good for air.
It's always best to check the tire pressure when under load and cold. When you read your sidewall it says ie. 65psi at 2500lb load cold. Remember tire pressure increases with heat.
I would think all tire pressures should be with tires cold and with the trailer or vehicle unloaded or at normal weight. But, do not exceed the manufacturers side wall cold inflation maximum rating.
correct. My flatbed 32000 GVWR GN tires are the same pressure loaded trailer or empty. Check them when cold only and do not let pressure out after a long pull in hot weather. I've seen 88-89 psi in my 80 psi rated tires after they get hot from heavy loads and interstate speeds. JIM
You can inlflate your tires however you want. Befor I put my 3500 lb Lance camper in the back I check my tire pressure, cold and unloaded.
I tested this out on tuesday. The Air pressure does not change. I loaded 10 k in my enclosed trailer and the PSI stayed right at 95. the same as without the load.
Did your ride improve a lot? I just put Air Lift air bags on my 2500HD CC, 4x4, short bed and I am about to tow with the bags for the first time. I have an inboard compressor so I can adjust on the fly. I am still running the stock tires and my trailer is light (about 7000 lbs). I got the air bags to help with the bouncing.
