Rear rims heating up while driving

[Frontline]

After replacing yet another three frozen calipers I noticed while driving today at a steady 60 mph for 50 miles with outside temps of 70 degrees that both rear rims were warm (115 degrees via laser). I am running big mud terrains at 42psi. I have never noticed this before. Any thought? Could it be the tires warming the rims that much? Bearing were replaced about year ago.


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[AuSeeker]

After replacing yet another three frozen calipers I noticed while driving today at a steady 60 mph for 50 miles with outside temps of 70 degrees that both rear rims were warm (115 degrees via laser). I am running big mud terrains at 42psi. I have never noticed this before. Any thought? Could it be the tires warming the rims that much? Bearing were replaced about year ago.


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I don't think the tire would be the cause of this, but one way to determine that is check the temp of the tires also, then I would also check the rim at the tire bead and then at the lugnuts, if it's the brakes/rotor causing the heat it should be hotter at the lugnuts area of the rim compared to the tire bead area of the rim or vice versa if it's the tires.

 

[Frontline]

Thanks will look tomorrow. I hope it is not the brakes as they are 4 days old now.


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[ScooterMD]

After replacing yet another three frozen calipers I noticed while driving today at a steady 60 mph for 50 miles with outside temps of 70 degrees that both rear rims were warm (115 degrees via laser). I am running big mud terrains at 42psi. I have never noticed this before. Any thought? Could it be the tires warming the rims that much? Bearing were replaced about year ago.


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i can't imagine it's the tires. maybe the shoes rubbing against the hub? do you feel resistance when you turn the rear wheels when the axle is elevated?

also, 115 doesn't seem that hot to me. are you sure that's irregular?