Ok: Since the time I started this thread I have replaced all four tires and both front wheel bearings. I had the alignment set just prior to the original temperature readings. I repeated the same drive today. The ambient air temp today was 72°f. I believe it was in the upper 80's when I took the initial set of readings. I suspect that I need to have the alignment checked after dismantling the front suspension to replace both front wheel bearings. I took three readings on each tire. Temps are listed as read across the tires from drivers side to riders side.
LF 103 104 108____________117 112 102 RF
LR 98 103 105____________110 106 105 RR
It just so happens that my wife got home at the same time I did after a similar drive on the Interstate so I also took a reading on her tires. The CC has the exact same tire as the A4 (235/40/18 Conti DWS) except hers have about 20k miles on them.
LF 100 100 105____________100 98 99 RF
LR 92 98 100____________95 97 93 RR
Observations: Inner edge of all tires on both cars are running hotter than the outer edges. Apparently something is seriously out of whack with my front right wheel alignment. Even though I didn't disturb the tie rod length I'm guessing that the alignment changed a little from removing everything to replace the wheel bearing. As you can see there is a 15° gradient across that tire whereas all the others on both cars are in the 5° to 7° range. It will be interesting to see what's different on the front right. Time to head back to the alignment rack. Hopefully the new information will give me a better idea as to whether the toe or the camber is the cause. My homemade toe checker indicates a very slight amount of static toe in but I have no way of determining if it is coming from the left side or the right side (or a combination of both). I'll post the results once I figure it out.
Cheers!
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Originally Posted by old guy
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