I'm going to give the calipers a spruce up and ideally change the anti rattle clips that are rusty and look horrible.
I did think about just painting the ones on there, but I've got a very intermittent clunk on the rear offside that I think is the caliper moving a little now and then. Literally only happens about 1/4 of a mile after moving the car from where it's been parked, then it doesn't appear to come back.
I was wondering if when the brakes are cold there is more friction between pad and disc that causes a bit of caliper movement as the clip seems to have lost a bit of its strength, but then once the brakes are warmed up it's not so much of an issue.
I had a similar issue on my Mini Cooper S and spent many hours trying to work out what the clunking noise was to eventually find it went away if I lifted the handbrake one click. Turned out to be a £5 anti rattle clip. So seems like a good place to start with this noise although the handbrake set up is completely different.
Plus, if I poke a screwdriver through the wheel and try to move the arms of the clip, the potential offending clip just doesn't seem to have as much strenth as the other clips on the other wheels.
Called BMW to order 4 new clips and they wanted £64+vat which seemed a little on the steep side, considering in a years time they'll probably be going rusty again, maybe I'm just being tight!
My question is, has anyone had any experience of buying them elsewhere, seen a couple on eBay that are for a Z4M so should be fine I'd have though and a fraction of the price.
I did think about just painting the ones on there, but I've got a very intermittent clunk on the rear offside that I think is the caliper moving a little now and then. Literally only happens about 1/4 of a mile after moving the car from where it's been parked, then it doesn't appear to come back.
I was wondering if when the brakes are cold there is more friction between pad and disc that causes a bit of caliper movement as the clip seems to have lost a bit of its strength, but then once the brakes are warmed up it's not so much of an issue.
I had a similar issue on my Mini Cooper S and spent many hours trying to work out what the clunking noise was to eventually find it went away if I lifted the handbrake one click. Turned out to be a £5 anti rattle clip. So seems like a good place to start with this noise although the handbrake set up is completely different.
Plus, if I poke a screwdriver through the wheel and try to move the arms of the clip, the potential offending clip just doesn't seem to have as much strenth as the other clips on the other wheels.
Called BMW to order 4 new clips and they wanted £64+vat which seemed a little on the steep side, considering in a years time they'll probably be going rusty again, maybe I'm just being tight!
My question is, has anyone had any experience of buying them elsewhere, seen a couple on eBay that are for a Z4M so should be fine I'd have though and a fraction of the price.
