Originally Posted by dtime1
We recently bought a Zinger 33SB. Came straight from manufacturer with 50 psi in all 4 tires. Tires say 65 psi cold pressure. They are nitro filled so not sure if that makes a difference. Thoughts?
Run your tires at the recommended max cold psi pressure - 65 psi. If you run them lower than this you risk tires heating and blowouts. I run my E rated tires at recommended pressure of 80 psi all the time. Was through Texas and Louisiana in July and didn't have any problems at 105 degree weather and my tires never heated. If your trailer is loaded anywhere near maximum don't keep them under 65 psi. Others may have different experiences but most blowouts occur because tire pressure is too low and they heat. Especially these cheaper Chinese tires they use. Just add air to increase pressure, don't worry about nitrogen. Probably came from factory at 50 psi - trailer with no extra weight added - you'll add about 1,500 pounds plus to that weight once you have everything loaded and tank of water, etc.