Tire Tread/belt problems of the 1997 Chevrolet Astro

While driving 60-62 mph rear driver side tire experienced tread separation. 4 tires were replaced on 07-02-03.

The left rear firestone tire I purchased at montgomery wards lost the tread while driving and caused me to swerve across the road a number of times before getting the van under control.

General tires p215-75-r-15, experience excessive wear of the tread on the inside and outside of the tire every 6,000 miles. Nothing left, no tread left, highway travelling and around town. Dealer contacted and is aware of the problem. They will replace the tires, attempted to order, still on backorder.