I just returned from a Chicago - Boulder - Chicago round trip in my 07 612. In four days. My question is this: my car has both the tire pressure and tire temperature system. I noticed on the return that while the tire pressures were all about the same, the right rear tire consistently ran 20 degrees warmer than the right left. The fronts were the same left and right. There was a strong tailwind left to right, but that is the only reasons I can think of. A visual inspection revealed nothing abnormal with the tire. High tire temperature in the right rear ran about 120 degrees. Any thoughts or similar experiences?
Nice grand touring trip, Don! My guess would be that, at a constant highway speed, the right rear is getting most of the driving power. (The LSD doesn't come into play.) But just a guess.
Interesting, and makes some sense. And, yes, it was a terrific trip. One day there, one day back, and two days in the mountains driving around. And the sound echoing off the canyon walls in the mountains was epic.
The crown of the road can have an effect on individual tire temperatures and maybe on a longer trip you would see a higher temp on the outside drive tire. Just a thought.
All things being equal... Crown of the road, alignment or corner weighting. Did you have something heavy in that corner of the car?? Rick
Nothing different about the corner weight. And, strangely, as I approached Chicago and the outside temp came down (as did my average speed) the temps went back to parity. Maybe just the car giving me something to keep my mind occupied during a 14 hour drive??
Perhaps that wheel/tire has just a bit more runout or imbalance than the left rear? Or possibly that wheel bearing has a bit more play in it? It would be interesting to put both wheels on a Hunter GSP9700 and see if there's any difference when road force is applied.
