Mopar vinyl seats lasted about 50K miles before they started ripping and that was in mild climate weather. I think the hotter climates caused them to harden up and start ripping sooner.
Also carpet started getting worn about the same time seats started ripping. Back in the late 70's I got a quote to completely recover my 1971 Duster bucket seats. Try $1000 back then (1979)! They said it was because of the many pieces and that they were all double stiched. They said they were the most costly and difficult seats to redo of all the brands.
