warped Pagid discs. What to replace with.
Discussion
Hi all. Not so long ago I fitted Pagid discs and pads to my Z4 however under heavy braking from high speeds they change shape and send big vibrations through the steering wheel. Under normal driving conditions they are fine however I drive frequently on the autobahn so I need discs that are up to the job. What do you guys recommend. For £200 I can have BMW pads and discs however a mechanic has told me that they wont be a higher grade than the Pagid ones. What do you guys recommend? Car is a 2003 Z4 2.5i.
Pascal
Pascal
Best discs I ever had came from this guy http://www.godspeedbrakes.co.uk
But since he doesn't list a BMW fitment you might have to send him your old ones.
But since he doesn't list a BMW fitment you might have to send him your old ones.
sixspeed said:
Your discs aren't warped. Your pads aren't up to job, and have left uneven deposits on the disc when they have got hot. This is what is causing the vibration. New discs will just suffer the same fate unless you change the pads you're using.
This is where my money goes. Pad transfer is very common.http://www.mtecbrakes.com/catalog/product/view/id/...
Has anyone tried this disc and pad set from MTEC?
Pascal
Has anyone tried this disc and pad set from MTEC?
Pascal
menor95 said:
http://www.mtecbrakes.com/catalog/product/view/id/...
Has anyone tried this disc and pad set from MTEC?
Pascal
Pointlessly drilled and grooved and supplied with standard Mintex pads which in my experience are poor, inferior to OEM. Buy OEM pads, you don't need discs.Has anyone tried this disc and pad set from MTEC?
Pascal
There are companies online who stock parts from genuine OEM suppliers at a reduced price compared to genuine parts in BMW boxes over the parts desk. RealOEM tells me that my BMW takes Jurid pads at the front and Texstar at the rear. In the end I was pleasantly surprised by the price from BMW and they could get them in at a morning's notice. OEM pads feel great compared to aftermarket 'OEM equivalent' stuff, and if the rest of the system is in good condition you're unlikely to get them hot enough to fade or boil on the public roads.
Had a similar problem with my E61. "Original" disks caused vibration under braking. Local independent fitted new disks, which also caused vibration when he road tested it, so he fitted a different brand, which were just about acceptable. Problem came back over the next couple of thousand miles.
I mentioned it to my local tyre specialist when I was having the alignment done on another car, and he suggested grinding the disks. He said they get a lot of BMWs with this problem, as the compliant suspension bushes mean they are very sensitive to slightly out of true disks.
He checked the bushes, which were OK, so he trued up the disks on the car. Problem solved, for £60.
I mentioned it to my local tyre specialist when I was having the alignment done on another car, and he suggested grinding the disks. He said they get a lot of BMWs with this problem, as the compliant suspension bushes mean they are very sensitive to slightly out of true disks.
He checked the bushes, which were OK, so he trued up the disks on the car. Problem solved, for £60.
clockworks said:
Had a similar problem with my E61. "Original" disks caused vibration under braking. Local independent fitted new disks, which also caused vibration when he road tested it, so he fitted a different brand, which were just about acceptable. Problem came back over the next couple of thousand miles.
I mentioned it to my local tyre specialist when I was having the alignment done on another car, and he suggested grinding the disks. He said they get a lot of BMWs with this problem, as the compliant suspension bushes mean they are very sensitive to slightly out of true disks.
He checked the bushes, which were OK, so he trued up the disks on the car. Problem solved, for £60.
I would suggest that those disks were not out of true, but that something was wrong with the hub assembly they were bolted to or the way in which they were bolted to it. I have never once encountered warped discs or out-of-true discs from the factory. Grinding the discs would indeed solve the problem but I would expect the problem to return when the discs are replaced next time, unless something is done differently. I mentioned it to my local tyre specialist when I was having the alignment done on another car, and he suggested grinding the disks. He said they get a lot of BMWs with this problem, as the compliant suspension bushes mean they are very sensitive to slightly out of true disks.
He checked the bushes, which were OK, so he trued up the disks on the car. Problem solved, for £60.
BritishRacinGrin said:
I would suggest that those disks were not out of true, but that something was wrong with the hub assembly they were bolted to or the way in which they were bolted to it. I have never once encountered warped discs or out-of-true discs from the factory. Grinding the discs would indeed solve the problem but I would expect the problem to return when the discs are replaced next time, unless something is done differently.
I agree that the problem is unlikely to be caused solely by the disks, more likely a combination of the tolerances in several components, and compliant bushes. I fully expect to pay for grinding again the next time new disks are fitted.The guy that did the work said it was a problem that affected quite a lot of the BMWs that he works on, far higher percentage than with other makes. In the past he had gone down the route of replacing replacing bushes, hubs, etc, but that was very hit and miss, not to say expensive. On-car disk grinding works, and is relatively cheap.
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