Offside front getting warm

S

Stonemaker

Member
 Bedale , North Yorkshire
Can you help please with possible reasons and remedies

I took my 2008 Z4 coupe down the A1 from Leeming Bar to Boroughbridge and on both occasions I experienced the same issue

Car was ok when I left home no judder or brakes locking on or rubbing, after entering the contra flow at 50. The steering started to wobble and vibrate a bit like losing all you wheel balancing and this continued for about four miles, I then came out of the contraflow and speeded up and down and applied the brakes and judder was still there

I pulled of at Boroughbridge after approx four more miles and stopped

All wheels except front offside where cool, offside was pretty warm in the alloy wheel and the tyre and there was a smell like when you push it a bit and use the brakes

So started car and drove again and wheel and tyre coolant the same temperature then for the rest of the 100 mile journey to and from Manchester

I run the car regularly and at no other time except on this stretch of road has it done this and the wheel and tyre has got hot

Thoughts please, in my mind if it’s the wheel bearing it would be there constantly, if the brakes were binding I should notice, tyre pressures are fine and Bridgestone are ok tread wise
 
Could be a warped disc or a sticking caliper, what's the mileage on the car? Does the wheel spin freely when jacked up?
 
Sounds like a sticking calliper...and usually you’ll get a corresponding tyre pressure warning if it gets too hot (as the extra heat goes from the brakes, to the wheel, to the tyre and increases the air pressure in the tyre).
 
I had this same problem, try what bmwaddict suggests and jack your car up to see if the wheel spins freely. Mine turned out to be a sticky caliper so I got a new one from ECP.
 
Dont rule out a degraded flexi pipe if they are old. Happened on my ex's E91. Most likely the caliper though.
 
Sticking caliper gets my vote too. I had the same last year on a rear and it sounds like identical symptoms.
 
Thanks all , question why only occasionally then and not all the time

Any better type of callipers to fit or in a callipers a caliper

Presume you are better to do as a pair
 
Stonemaker said:
Thanks all , question why only occasionally then and not all the time

Any better type of callipers to fit or in a callipers a caliper

Presume you are better to do as a pair
Click to expand...

It can be partially seized & start out ok-ish but as heat builds from use it can cause brake components to expand & create more binding which leads to more heat etc etc.
If left, you can end up with a wheel locked almost solid.
I’d change the pair, they’re both subject to the same conditions /wear so the “good” one won’t be far behind the the bad one.
Rob
 
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