Trailer tires
We have a dual axle travel trailer with 13" wheels. On our last trip blew one of tires. I started doing some research and found that these are ST rated tires which I think means they are rated to 65 M...
Forum Discussion
mileshuff wrote:
tires have a speed rating of Q, which is 99mph. However, they state that is dependent on load. As you increase speed you need to increase PSI up to the tires limit and decrease load. Check their load tables for what PSI is needed for your trailers weight.
From Maxxis:
"From 66 to 75 MPH – the tire inflation pressure needs to increase 10 PSI (not to exceed the maximum PSI the tire is rated for) but requires no load adjustment.
From 76 to 85 MPH – the tire inflation pressure needs to increase 10 PSI (not to exceed the maximum PSI the tire is rated for) and load should be reduced by 10%."
Where did you get this information?
One, this would be the first ST I have ever heard of that has a 99mph rating. Yes there are tire web sites stating Q rating for this series but Maxis doesnt state anything. And I've never received any response from Maxis of anything more than 65mph speed rating on their ST's. I've asked a few times of a number of years.
Second, regarding pressure for higher speed. Max cold PSI is the PSI nearly everyone runs in their ST's. And I read those statements as needing 20psi increase to run 76-85mph. Does anyone else?
So increase PSI from what? 10-20psi over max cold? NO WAY?!?!
Then they say it cannot exceed the maximum PSI the tire is rated for. What are they referring to??? Max cold again? That's the only max PSI we as consumer know of. But that's not what they state.
