Hi,
Just recently, since the salt season really started up here, both rear hubs have been hot after a trip. First alerted by the higher requirement of go pedal and a large drop in the MPG (30+ to 24...)
By stint of every now and again standing on the brake pedal, when stationary a couple of times I can free 'em off such that the hubs remain cold even after bowling down the motorway for an hour+ at 60mph. Any braking though and they'll start to warm up again, not often too hot to touch but definately hot and not really noticeable in the go pedal, just the MPG (28's instread of 30). This isn't normal braking heat, as they'll be hot even after using the gears and minimal braking to slow down and the front hubs cold.
I don't think it's a wheel bearing issue, why would leaning on the brakes give a temporary cure? And I've done over 1,000 miles since I first noticed the problem. I feel bearings shagged enough to get hot would have fallen apart by now.
It happens both sides though the near side is less affected. Is this likely to be sticky calipers, sticky cylinders or sticky front/rear balancing valve?