I used the Grand Cherokee spares on B and J bodies, it was bigger around than the factory compact spare tires. I never drove on them, but did install them when the cars were sitting and wanted to use the regular tires and rims for another car. As Norm mentioned in another thread, in the late 90's Chrysler recalled some Grand Cherokees to remove the temp spare and install a full sized spare. My friend at the dealership hooked me up with half a dozen of the temp spares they removed.TWX said:I've heard that the XJ Cherokee donut spare tire is a good spare for sixties and seventies RWD Mopar cars, anyone tried this?
Also, a bias ply tire won't do the damage to a car that a steel belted radial will do if it shreds though it's still a handful if it happens at speed.Bob Lincoln said:When my grandmother sold her house in 1992 and moved to a retirement home (where her 66 Newport would be out to the weather for the first time), her front tires were from 1970 and the rears from 1978. They were pristine. I suspect today's tires are very inferior to old bias ply tires as far as ozone and UV resistance, or at least the rubber compound is.
I'll admit I don't keep a "new" spare in my cars. A couple years back when I was driving the 1989 Fifth Avenue, I had a flat and had to install the original 1989 full sized spare. I figured if I kept off the freeway and kept speeds below 45mph (to keep heat build up down) I would be OK and I was. Now if that tire hadn't been in the trunk, I am sure it would have dry rotted and been unsafe after that time.