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There's warm, and then there's hot Posted by Ari [Email] (#2847) [Profile/Gallery] (more from Ari) on Mon, 17 May 2004 09:46:38 In Reply to: Front brakes drag, Bob F, Sat, 15 May 2004 07:52:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
It's not unreasonable for the front wheels to be warm. Stopping a car means turning all that forward motion into heat, and that heat has to go somewhere. Since you probably check the wheel temp when stopped, you had to do at least one set of braking before you checked the temp. If you were doing any amount of around town driving, it's reasonable that they'd be warm.
With reasonable stopping and perfectly fine brakes, the wheels and hubs would be warm to the touch. Touching the rotor will cause loss of skin (don't try this!). Signs of a dragging caliper would be the smell of roasted brake pad when you get out of the car. Continued dragging would cause rotor warpage - you'd notice a pulsation in the pedal when braking, and possibly even front end vibration while driving along, foot off the brake.
You can check by jacking up the front end and turning the tire. There will be some drag from the differential, and it's quite normal to hear a little scrape from the brake pads. Spin a tire, and normally it'll stop in a turn or so. If it's hard to turn the tire, and it won't spin at all, then you might have a dragging caliper.
However, I've found that the best test of a dragging caliper is my nose. It's normal for them to get hot. When they stink, you have a problem.
posted by 192.249....
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