Tire Tread Life - Irrespective of Age

[Gary RVRoamer]

My 33,000 lb coach hasn't ever worn out tires before they died for age or road hazard reasons, but I've put 40k miles on a couple without coming even close to using up the tread. I think 60-70k would be achievable (size 295/80R22.5, from Good year and Continental).

A previous rig weighing in at 22k lbs had 55k on the Michelin 235/80R22.5's when I traded it in at age 5. Still plenty of tread left.

[Piker]

After some tire rotating efforts last spring to try and salvage my tires from some strange wear issues, I thought I'd update the thread to share what I think may have actually caused the wear - RIMS ARE INDEED OUT OF ROUND. Over 3/16ths of an inch.

long story short... ended up having to get new steer tires on our trip home from Tucson back in June because of some road debris. They changed the tires right in the parking lot and balanced them with equal, but I still had some shake and shimmy to the ride. Got home... had the equal removed and the tires spun balanced. I asked the technician to check runout of the rims... over 3/16ths. I assume this is too much? I believe that probably all of my rims are like this... explains alot.

Not sure, but I think the only thing I can afford to do is shave them and rebalance them. Aluminum rims are too much $$ right now.

-cheers