Brake disc issue? Rear-right wheel noise + wheel getting hot

1242 Views 7 Replies 6 Participants Last post by Tchernobyl, Oct 31, 2020

Tchernobyl

Discussion Starter · Oct 16, 2020

Hello All,
Me and my newly acquired Spider again...
While driving with the top closed, I started to notice some sort of rubbing noise coming from the rear / right side lately.
Once back in the garage, after approx 25km, I noticed indeed that the rear/right wheel was noticeably warmer than the other 3.
Could this be a disc / brakepad issue? or a wheel bearing?
I had no tools to take the wheel off but hope I will be able to do so later this weekend...

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GTA Alfa

· #2 · Oct 16, 2020

Hi Remi,
The most common issue would be a clogged rear brake flex line. Its the one over the rear axle. Change it and you should be good to go. If that doesn't solve it, then check the caliper at that wheel, may be sticking or pads to tight in the caliper.

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bianchi2

· #3 · Oct 16, 2020

just rebuild the ( both ) rear calipers, they are old, once you take them off the car, you will understand.. the boot seals are most likely in bad shape, allowing dust to stick the caliper pistions.. cheap to do.. most likely they have never been serviced from new

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SpyderWeb

· #4 · Oct 16, 2020

My money would be on a seized brake piston in that rear caliper, holding the brake pad against the rotor, creating noise and generating heat. A worn bearing would possibly be noisy, but I think you'd have felt a vibration more so than any appreciable amount of noise, unless it was really worn out. As bianchi2 has suggested, I'd rebuild both calipers, check the pads and rotors (rotors for warping), put it all back together and get back out on the road.

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spiderserie4

· #5 · Oct 17, 2020

Tchernobyl said:
I had no tools to take the wheel off but hope I will be able to do so later this weekend...

......and get some tools

There should be a scissor jack and a small pouch of alfa tools in the trunk...basics, but gets you home...

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Tchernobyl

Discussion Starter · #6 · Oct 17, 2020

Yep. back home with a proper jack as well.

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IvoOrdway

· #7 · Oct 17, 2020

You may also look at your parking brake, If the cable is bent or even if your hinges are dirty it could be rubbing the brake to the drum on the inside of the disk.

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Tchernobyl

Discussion Starter · #8 · Oct 31, 2020

Epilogue: brake pads were changed by the PO a while back but he did not really drove the car after that. They were so "new" that some paint (?) got stuck in there. Cleaned. Drove 30 km - All fine.

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