Bumpy brakes

Anonymous · April 25, 2005, 14:08

I've been driving a 2000 MR2. although the brakes seem to be working ok, they have a bumpy, undulating feeling through the pedal - almost like ABS cutting in but maybe a bit smoother than that. Also, I think the pedal feel may be a bit on the soft side but as this is the only one I've ever driven its tricky to tell! I've checked brake fluid level and that's fine. I guess the prime suspect would have to be one or more warped disks but I'm going to try bleeding them first.

Any other possibilities I should be looking at?

Cheers

David

Slacey · April 25, 2005, 14:22

Definately sounds like warped disks to me, especially if they are the originals.

Anonymous · April 25, 2005, 14:58

presumably the fronts are the most likely to be warped. How much are a set of disks and pads likely to cost? Where's best for parts?

Cheers

David

Anonymous · April 25, 2005, 18:14

Speedways £90 complete

Anonymous · April 26, 2005, 11:03

Quote from: "Bowman"Speedways £90 complete

Cheers! That sounds pretty resonable!!

Is there a service manual online anywhere that will cover torque settings for the calipers, wheels etc?

David

Anonymous · April 26, 2005, 20:47

Remember that in many (and probably most) cases, the problem isn't warped rotors. Rather, brake pad material can build up in one or more spots on a rotor, and give the "bumpy" feeling you've described here. The standard solution is to have the rotors professionally "turned," or cleaned.

At that time, the shop will let you know if new rotors are necessary. After turning, it's recommended to replace the pads and then follow the manufacturer's break-in procedure. With this car, you want to keep the brakes in tip-top shape so get this attended to ASAP.

Anonymous · April 27, 2005, 11:47

Quote from: "southerneditor"Remember that in many (and probably most) cases, the problem isn't warped rotors. Rather, brake pad material can build up in one or more spots on a rotor, and give the "bumpy" feeling you've described here. The standard solution is to have the rotors professionally "turned," or cleaned.

At that time, the shop will let you know if new rotors are necessary. After turning, it's recommended to replace the pads and then follow the manufacturer's break-in procedure. With this car, you want to keep the brakes in tip-top shape so get this attended to ASAP.

Is this the sort of thing most garages can do or are there specialist places? Must admit, when I got my car I considered getting this done but decided just to replace the disks. How expensive is getting them turned?

David

Anonymous · April 28, 2005, 04:42

Anyplace advertising itself as a "brake shop" can turn rotors - and for a whole lot less than installing new ones. MrT included. Guys go out to the track and put this car through heavy use and report the brakes holding up fine, so I'm betting it's just build-up.

roger · April 28, 2005, 11:04

Quote from: "southerneditor"Anyplace advertising itself as a "brake shop" can turn rotors

This is the good 'ol UK you know, "brake shops" are restricted to places like Kwik-Fit who don't know the difference between a drum and a caliper (well they might just manage that, but its about all!)

Anonymous · April 28, 2005, 13:14

Quote from: "roger"
Quote from: "southerneditor"Anyplace advertising itself as a "brake shop" can turn rotors

This is the good 'ol UK you know, "brake shops" are restricted to places like Kwik-Fit who don't know the difference between a drum and a caliper (well they might just manage that, but its about all!)

Yeah, thats what I was thinking. I guess that would leave main dealers? I have no idea what the labor charge would be for this but at £33 per disk I suspect a shiny replacement might be the way forward!

...I wonder if they will rust less than the stock ones?!! s:roll: :roll: s:roll:

Thanks for the advice folks

David