the other day, I had to have the left rear tire on my '89 240 wagon replaced
because the tread was beginning to separate. I had been noticing some
vibration, and when it kept getting worse, I pulled that wheel off and
quickly found that there was a noticible bulge of  the tread in one place.
Needless to say, replacing the tire solved the vibration problem. The tires
had about 30,000 miles on them, so hard to complain, and they did pro-rate
the new tire. My question: is this something that would be related to tire
pressure? I like to keep about 36PSI in my tires. The ride is a little firm,
but the car handles fine and I get good gas milage and tire wear. This is
the first time I've ever had a tire fail, so I view it as a random event of
bad luck, but just wondering....

m9876c at yahoo dot com