[tom406]

I recall reading that the Chevrolet engineers didn't trust or had concerns about the "new" Polyglas technology being up to the task on the Corvettes and musclecars. Thus it seems that Buick/Olds/Pontiac all started using the tires prior to Chevrolet. Last time we debated this, I scoured all of my old magazines, looking for pictures of '69 Chevrolets fitted with Polyglas tires. I didn't find one. The earliest Chevy I could find pictured with Polyglas tires was the '70 LS6 prototype/press car shown at the '70 new car introduction. That would have been assembled in mid-to-late '69 to make the September or October '69 issue of CARS magazine.

I did find a picture in Marty Schorr's "CHEVROLET The Performance Years" of a Troy, MI based '69 Camaro ID'd as a COPO wearing what appeared to be 14x7" Rally Wheels and f-70-14 Wide Tread's(not GT's).