Tire wear on tag axle

[Newellin Thunder]

We just put new tires on the duals and front axle and moved the nearly new front tires to the tag axle. Then drove 1200 miles and the driver's side tire on the tag now shows some abnormal wear in certain areas. Not across the whole tire, just in spots. Almost like it is cupping or something. Inflation is good, did not notice any vibration on the trip, but this is a lot of wear for a relatively short number of miles. I know a tag tire can get scrubbed as you make turns and back into RV sites, but we only backed into one RV park site on the whole trip Anybody have any ideas on what's chewing this tire up?

[Ron Skeen]

What brand and size? I had some Toyo's have a funny wear pattern that my tire guy explain: just that it happen some time, but sold me Michelin's which have been fine.2869287028712872

[Neweller]

Definitely cupping. Are these the same brand, size, and tread pattern as the rear duals? Is your air pressure matching your rears?

[The Newell]

I assume your tire was balanced because it was on the front, Its Possible there is insufficient pressure on the tag. Cupping is normally caused by suspension issues and can be balance related in some circumsatnces. These problems allow the tire to bounce against the pavement.

[GringoPhil]

Did you adjust the tire pressure after moving the tire to the rear and to a dramatically lighter loaded tire position? A hard tire will magnify any of the other faults noted by bouncing more.

[fulltiming]

My fronts run at 120 and my tags at 100. Twenty pounds over-inflation could cause issues.

[Chester B. Stone, Jr.]

I severely damaged my tag tires when I had a panic stop. The lighter weight on the tires caused them to freeze and scuff.

[NEWELLWIZARD]

I don’t mess around when it comes to my tires. I always inspect them and replace at the first signs of any cracking or worn tread. I always check tire pressure before any long road trip. As Michael said over-inflation can cause issues. I also say it's best to buy tires in pairs.