Just some of the stupid things I see

Only problem with that is if the tires are not inflated as per some arbitrary standard written to idiot-proof the enforcement standard so that even the lowest common denominator with a badge & gun can successfully write a citation to generate revenue for the state, then that revenuer can place the truck OOS, which reflects poorly upon both me as the driver and the carrier who's authority I operate under.

It is definitely something that needs further looking into, as more is not always better when it comes to tire pressure. I really would like to know where that "50% of max" standard came from and what the reasoning is behind it. Moreover, I'm calling into question the authority the CVSA has to create enforcement standards which vary from the FMCSA regulations to the point of contradicting them.

 

Tell ya what.
DB made a good suggestion a few pages ago. Call or write the CSA board, and ask them.

Otherwise keep your tires properly inflated and don't sweat the petty stuff.

I usually run around 110psi in my tires and get a year+ out of a set (currently near 18months with this set). I am satisfied with that result. My tires don't see max load capacity, ever. I have decent wear across the axle and on the individual tires themselves.
I also run 110 in the steers and have had the same results, though I don't remember when those were last replaced (near 4 years ago I think).

 

I run 130psi in mine. After reading all this I think I'm gonna add 10psi more......just to be safe

 

*whew!*

 

This page is even better: http://www.michelintruck.com/michelintruck/tires-retreads/load-inflation-tables.jsp

It lists load and inflation tables for every Michelin truck tire in every size.

Most trucks are running tires that are over-inflated (by as much as 60%) according to the tire manufacturers recommendations for comfort and wear.



Obviously there are no auto racing fans posting or they would know about how tire pressure is used to adjust things like ride height, stagger, contact patch, traction, etc. The pressure on the sidewall is always the maximum cold inflation pressure, nothing more... it is never a recommended inflation pressure except in the case of a tire being subjected to the maximum recommended load... which very few drivers except heavy-haul will ever approach.

Eg. 275/80R22.5 load range G XDA3 in dual configuration on tandems inflated to 105 psi is rated to 43,520 lbs.

 

It doesn't? CRAP!

 

Truck tire is not a race tire. Not the same thing. I race a 92 mr2. Tire pressure varies for maximum traction and wear and tempatures so the tires don't blister. Not really worried about wear pattern with the camber we have to run.

We don't change height with air pressure that's what we got suspensions for. Shocks and springs.

Truck tires and race tires not in the same class

 

All pneumatic tires are round, black and hold air... the concepts are all applicable. Why do you think the major manufacturers are involved in racing? It isn't for marketing purposes alone, it is a great laboratory. I have plenty of racing experience on both two and four wheels, up to national-class competition in both cases. And yes, in some cases/classes tire diameter change due to pressure is considered for ride height.

 

Some cases, not all cases. I understand you. I know why their involved. Like you said a great real life laboratory. They test their new rubber, how it handles temps, how it wears and how it holds after a certain amount of xxxx miles.