We now have 5,000 miles on the Expy and both front tires have been replaced under warranty due to cupping. The results of which caused excessive steering wheel vibration and twitchy steering at high speeds.

My dealer checked the alignment and said it was within spec. but elected to adjust the caster a bit. The truck is now smooth and very happy at high speed.

Yesterday I parked next to another new Expy and noticed his tires exhibited the same cupping on the front.
Anyone else notice this?

 

Sounds like a good excuse to get rid of the crappy OEM Contentials.