Brake Issues
#1
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Brake Issues
Howdy,
Is anyone else experiencing pulsating brakes?
Mine started doing this after the front brakes started squeeling. The squeeling has sort of gone away but the pulsating is getting worse and is annoying. It's more noticable when stopping from higher speeds.
Will be visiting my local Mazda dealer in a few weeks to get this sorted out but would appreciate some advice before visiting the dealer.
Cheers,
Pappy.
Is anyone else experiencing pulsating brakes?
Mine started doing this after the front brakes started squeeling. The squeeling has sort of gone away but the pulsating is getting worse and is annoying. It's more noticable when stopping from higher speeds.
Will be visiting my local Mazda dealer in a few weeks to get this sorted out but would appreciate some advice before visiting the dealer.
Cheers,
Pappy.
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Hi,
The car is standard - no mods and done about 11,000km.
The pulsating feels like the brakes are grabbing then letting go grabbing - letting go continuously until the car comes to a stop. It's not the typical ABS sensation.
There's a thread on the Tech Garage forum which describes this exact issue and seems to be somehow related to the brake rotors being a problem. (https://www.rx8club.com/series-i-tech-garage-22/pulsating-brakes-42453/)
Cheers,
Pappy
The car is standard - no mods and done about 11,000km.
The pulsating feels like the brakes are grabbing then letting go grabbing - letting go continuously until the car comes to a stop. It's not the typical ABS sensation.
There's a thread on the Tech Garage forum which describes this exact issue and seems to be somehow related to the brake rotors being a problem. (https://www.rx8club.com/series-i-tech-garage-22/pulsating-brakes-42453/)
Cheers,
Pappy
#7
trust me..this wont hurt
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only if you can prove that they were not subject to wear and tear and radical thermal cycling. I'd give it a go anyway, ordinary use should see the rotors lasting a good 80-100k.
#8
They should be covered under warranty if it is a design flaw from Mazda.
The dealership may try and make some money by saying that it's due to customer abuse since rotors shouldn't be warped after only 11000kms.
If this is the case, get out of there and get a second opinion at another dealer.
The dealership may try and make some money by saying that it's due to customer abuse since rotors shouldn't be warped after only 11000kms.
If this is the case, get out of there and get a second opinion at another dealer.
#9
cry me a river...
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depends......, im sure the rotors are classified as "wear and tear" parts, so it might not be covered under warranty
pls let us know when you have visited MA service centre. Assuming you will be going to rockdale?
e
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pls let us know when you have visited MA service centre. Assuming you will be going to rockdale?
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e
#10
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I'd be very surprised if this was covered.....brake wear and tear never is. And this is what we are talking about here. I've been in quite a few Fords and Holdens where this has occurred after short distances like 11K. I remember a ride in a mates VT Commodore wagon where his rotors were warped so bad the shift lever jumped gears under hard braking!
All the best Pappy, you never know, we are talking about a $60000 car....the dealer may cover it as good will.
Regards, Gomez.
All the best Pappy, you never know, we are talking about a $60000 car....the dealer may cover it as good will.
Regards, Gomez.
#12
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I had my rotor's recently skimmed, and new pads installed - as after the track day the rears warped.
www.cityperformancecentre.com done it all for me, was around $500 total for the Mazda pads, disc machining, fluid, labour - bloody top job!
www.cityperformancecentre.com done it all for me, was around $500 total for the Mazda pads, disc machining, fluid, labour - bloody top job!
#13
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My dad's jeep grand cherokee had a brake problem. The whole brake kit had to be changed every 40-50000 kms under warranty. I think it was a build failure on quite a number of them.
#14
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I've noticed, possibly after some spirited driving, the brakes tend to wobble the front end due to perhaps leaving it in neutral and just braking. Downgearing seemed to be more stable on the front.
Is it bad to leave in neutral and break. I think peers have taught me to be tight n save abit of clutch and reduce engine stress. Hope it ain't costly.
Is it bad to leave in neutral and break. I think peers have taught me to be tight n save abit of clutch and reduce engine stress. Hope it ain't costly.
#15
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Originally Posted by RXP33D
I've noticed, possibly after some spirited driving, the brakes tend to wobble the front end due to perhaps leaving it in neutral and just braking. Downgearing seemed to be more stable on the front.
Is it bad to leave in neutral and break. I think peers have taught me to be tight n save abit of clutch and reduce engine stress. Hope it ain't costly.
Is it bad to leave in neutral and break. I think peers have taught me to be tight n save abit of clutch and reduce engine stress. Hope it ain't costly.
Gomez.
#16
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I hope my brake pads are under warranty I have been using them to stop
:D :D
I dont think the problem is a design fault its how you use the car.
Regards
Phillip
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I dont think the problem is a design fault its how you use the car.
Regards
Phillip
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Leaving in neutral and braking is bad... you should always drive in such a way that you can accelerate out of a bad situation. Leaving the car in gear while braking enables this.
Agree with Gomez on using engine compression to brake (and the RX-8 has plenty). My other car is on its original brake pads, discs after >100,000 km's due to the use of engine braking. It is also still on its original clutch with no signs of age despite the use of engine compression.
Agree with Gomez on using engine compression to brake (and the RX-8 has plenty). My other car is on its original brake pads, discs after >100,000 km's due to the use of engine braking. It is also still on its original clutch with no signs of age despite the use of engine compression.
#19
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Actual warped discs are massively uncommon these days- especially on something with brakes the size of the RX-8 ( unless you've been using it for trackdays and not allowing sufficient time to cool before you park it)-- for Eg. My rally car runs tiny tiny solid discs (230 mm), with competition pads (DS3000's- same compound as a fair few ARC teams use) . It gets hammered much harder than any track day to the point that the disc's get blued after 1 or 2 events-I've destroyed pads, and boiled fluid but I've never warped a disc.
You'll probably find in the vast majority of cases that you have an uneven build up of resin and crap from the pads on the discs.. this gives you the warped feel.
Skimming will fix it, but most likely so would some time with some wet and dry sandpaper ( fine grade!)
At service in an ARC rally you'll see some poor bugger going round with a piece of wet and dry sandpaper, cleaning the resin off the discs on the cars of all the big teams for this reason.
I never knew this until Steve from DBA posted some helpful info on www.performanceforums.com
Cheers
Rowds
You'll probably find in the vast majority of cases that you have an uneven build up of resin and crap from the pads on the discs.. this gives you the warped feel.
Skimming will fix it, but most likely so would some time with some wet and dry sandpaper ( fine grade!)
At service in an ARC rally you'll see some poor bugger going round with a piece of wet and dry sandpaper, cleaning the resin off the discs on the cars of all the big teams for this reason.
I never knew this until Steve from DBA posted some helpful info on www.performanceforums.com
Cheers
Rowds
#20
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Had 'warped' discs on my Ford XR8 and this was fixed under warantee. Had done a fair bit of heavy braking but hey when you gotta stop, ya gotta stop!! Has a lot to do with how 'soft' they make the discs.
#21
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Howdy,
Just had my RX8 serviced today and along with that asked to have the brakes checked. As it turns out, both my front brake disc rotors were warped.
The dealer contacted me and confirmed that the rotors are generally not covered under warranty, but that he would discuss this with MA in light of my low kms (12,200km at time of service).
Anyway - after a few hours the dealer confirmed that MA would replace the warped discs under warranty - replacement parts were installed this afternoon and my RX8 is now back to smooth braking.
At least this confirms MA is keen on looking after their customers.
Pappy.
Just had my RX8 serviced today and along with that asked to have the brakes checked. As it turns out, both my front brake disc rotors were warped.
The dealer contacted me and confirmed that the rotors are generally not covered under warranty, but that he would discuss this with MA in light of my low kms (12,200km at time of service).
Anyway - after a few hours the dealer confirmed that MA would replace the warped discs under warranty - replacement parts were installed this afternoon and my RX8 is now back to smooth braking.
At least this confirms MA is keen on looking after their customers.
Pappy.
#25
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That's my style too, Gomez. Brakes are for people who drive automatics. I remember the guy who took us round the circuit at the pre-delivery drive day said his aim was to teach people to drive such that the whole driving experience was smooth and seamless (which is kind of easy with such a great gearbox as the RX-8). I have a sort of Personal Best judgement on how I believe I handle my daily commute to and from work, and it has nothing to do with "spirited driving". I don't want to get all metaphysical about it, but the RX-8 is so beautifully responsive, it's possible that you can nearly reach a state where you and the car almost become one. Automotive nirvana is the aim.