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PJ, the numbers you report are about the same as we've seen. We've been using an infrared thermometer for a couple of years. Today we did a long day, 585 miles, in temps ranging from 72 (during a thunderstorm) to 102, with most of the day in the mid-90's. The highest I saw was 135 degrees F. I shoot both the rim and the tire so I can get a clue about the wheel bearings from the rim temperature. Now that I have done this enough to know what is "normal" for our rig, I just look for temperatures out of the normal range or if one wheel is significantly different than the others. A cold one might mean that brake is not working, for example. A hot one might mean a wheel bearing needs attention. The temperatures you mentioned, 100 to 135, are about the normal range for ours.
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