Super-Single psi

for what its worth, big rigger is a fanatic about tire pressures..if he says its so, then its so..i'd listen to the man, hes only been doing this for 30 or 40 years..

 

Running a log trailer with singles(hope to never have another one with SS's).And the truck is heavy all the time. As quad said it is brutal on tread edges. I have no solid evidence or facts to back this up, but i believe edges scrub on turns?
I run a few pounds (8-10 psi) shy of rating on tire. The trailer is a tri-axle with lifting back axle that can be run from dash. I always try to pick up third axle on the hard corners, i believe it turns easier?
And maybe J is correct in his post? I have never heard that before so something to consider?

 

http://www.michelintruck.com/michelintruck/tires-retreads/load-inflation-tables.jsp

IMO start with Michelins recommendations. I have been running X ones on T & T for almost 500 k and thru my testing I have found you can run less then recommended pressures,not overheat the tire,not have blowouts and get better wear. its all based on weight carried and speed. been running 100 psi in drives(34,000 lbs ) any less and it feels like its not rolling free. 85 psi in trailer(34,000 lbs ) anymore and the edge wear shows up. drive wear is even across all tires. trailer tire wear is even and has worn 4 32nd in 190 k. I feel I have a good understanding of these tires now and can offer this, if you arent going to check psi and look at them everyday, dont buy them ! they are not for everybody....

 

Perfect description! They work great for special applications but are not worth the hassle for most. They're not cheaper than duals, they're barely lighter than 22.5LP on aluminum wheels and they're not good off road or in snow. (especially empty) BUT they roll easier and if put on the right truck/trailer combo they do lighten it up some. But stick the wrong driver in the truck and they'll tear them up and kill all the benefits.

 

That would be me...

 

Haha, we thought the same thing and were told otherwise by Michelin rep. Turns out he was right, who'd 'a thought!

 

I need to take a pic or two and post. I dont believe this is air pressure problems. It scuffs the edges of tread severely...

 

i put 120 psi in my michelin -X-one xdn2 i change the set for meaby 6 weeks in the sidewall you see 120 psi

 

120 psi is max pressure. at 120 you can carry 10,200 lbs per tire. if your hauling 80k or less you dont need or want that. too much psi for the weight carried and the shoulders pick up and you will get the odd wear referred to earlier in this post. per Michelins recommendation. 95 psi is good for 8,390 lbs per tire or 33,560 lbs on a group of 4 tires. 100 psi is good for 9,090 lbs per tire or 36,360 lbs on group of 4. this is for sustained 65 mph. hope this helps..