Tire inflation
Got E rated tires installed, 80psi max, Tire guy said it would be better to run around 65-70 psi as tires heat up. Always thought I should run max cold rating 80psi. FW weight is around 9000 lbs hooke...
Forum Discussion
Me Again wrote:Shoe2728 wrote:
I had St 235 80R 16E went to BF Goodrich Commercial T/A All-Season 235 85R 16E GVW of FW is 12000. I have looked for a pressure weight table but mostly all I fine is max inflation rate is 80 psi. I have a 2011 crossroads cruiser 305skp
To get this back on track.
With a 12K 5th wheel you have around 9,600 lbs on the axles. Michelin CS(BFG is one of theirs) will tell you if you know your weights to use the inflation chart, if not run max sidewall pressure. I have a slightly heavier trailer that is placard for that size and list 65 lbs inflation. I run 71 pounds after finding a slight more wear on the outer edges years ago. My friends similar size trailer was placard at 80 PSI. So not everyone agrees.
Michelin will also tell you that over inflation reduces braking and increases the chance of impact damage. Weight the axles, check the inflation chart and add 5 PSI would be my answer.
Chris
Inflation is inflation!!
I also run the tires on my 5er at 70 pas not 80!
When towing I have 10,000# on the TV and only about 9,500# on the 5er. tires on the 5er rate at 3,042 each, 12,164 total I don't need 80 psi for that load.
I want the tire on the 5er to have full contact with the road for braking.
The reason the trailer manufactures state run full pressure is the standard tire is MAXed out, and they are crappy ST tires in the first place! :S
