Elimanating Brake Shudder

[Raging Bull]

Yeah machining them is only a quick fix and to be honest a complete waste of money. The reason for the discs to warp is that there is too much heat build up in the rotors from either a full emergency stop or heavy continuous braking. Because of the heat the disc warps under the extreme pressure from the brake pads, then when it cools it sets in that position. The cause of the issue, heat, goes all the way threw the rotor so machining only gets rid of the superficial damage. The real damage is inside the rotor core where the heat has permanently warped the metal. When the rotors get hot again, they warp back to what they were previously before they were machined.

Only real fix, new rotors.

Exactly right and what ****es me off most is why didn't the bloody "Brake Specialists" inform me of this, I was more than happy to buy new ones instead waste $150 on absolutely nothing, very angry about that.

 

[burnz]

when on the brake's, pay attenion to the gearstick to see if it move's up and down.
if so replace rear brake rotor's as well.

 

[Tom_1569]

when on the brake's, pay attenion to the gearstick to see if it move's up and down.
if so replace rear brake rotor's as well.

LOL, Im guessing when i say i dont need to look caus i can hear it moving its time to replace the back ones aswell.
Looks like its going to be 4 all round, maybe just slotted up front and standard on the back. Cheers for that, and everyone elses help, hopefully get this fixed this weekend.

 

[s_ikari2015]

I'd just like to say the 4 slotted rotors I purchased from not_an_abba_fan have been great. I replaced worn front wheel bearings as well and I haven't had a problem with my brakes at all.

I have felt the infamous VT "square rotors" before in my car and the new rotors are so much better now that they are bedded in. At the same time there was an issue with suspension I had Holden looking at and they were all like "oh boo-hoo, you shouldn't use slotted rotors cause they'll make heaps of noise and vibrations". Well guess what Holden, WRONG! Perfect brakes.

 

[Tom_1569]

Ok Funny **** about getting quotes.....
I went in to sale repco got quoted 123 per a slotted rotor and 58 bux per a pair of pads, also standard rotors 66 each.
My mums partner recons he can better that claiming hes mates with the boss, so he goes in to Sale repco and his quote is 196 per a slotted rotor, and 68bux per a pair of pads, he didnt get a price for standard rotors.
My mate who gets trade price goes into the same store (sale repco) gets quoted 130 a slotted rotor, but only 41 per a pair of pads.
Now im starting to think this is completly messed up, so i tried the traralgon store (still repco) on my way back from tafe.... 111 per a slotted rotor, 78 per a standard rotor, and 54 per a pair of pads.
So i go back to sale and see if they can match that, nope they claim its below cost price, and they advised me to just get them from traralgon as even they saw the savings.
None of this makes any sense, how can i get the cheapest quote over mates rates and trade price haha, except for brake pads.
Anyways to cut a long story short, ill be buying the rotors in traralgon and my mates gonna pick up the pads for me, so all 4 four DBA slotted rotors and a full set bendix pads for just over 500bux, not bad considering the total quote my mums partner got was 900+ and mine was 600+. Definitly pays to shop around.
Sorry for the long post I just found this quite amazing, and yes dont worry I have to much spare time so it didnt affect me one bit shopping around.

 

[pablo]

Well, I ALWAYS use my torque wrench on the wheels. I had very bad shudder due to unevenly worn rotors, (thick and thin spots, ...don't take much to make them shudder)
Had rotors machined and I fitted new, expensive Bosch pads for long life. A few thousand K's the problem gradually came back.
Fitted NEW DBA rotors and re-fitted the same pads, which had plenty of life left in them. A few thousand K's the problem came back, again.
Had these rotors machined and fitted a set of 'el-cheapo' $30 Ferodo ZERO pads, made in Thailand, and WALLA! there is no more shuddering problems, done just on 20 thousand with plenty of life left in them, tho they are a little more dusty than the hard wearing Bosch.
Pablo