2012 Brake issues

Zulator

Anyone having brake issues on 2012? Feels like it's the front breaks...Steering Wheel shakes while breaking from 45-50 miles per hour...Car only has 13,000 miles and has never seen snow. Got an apt. at dealership but just wondering.

DEpointfive0

Your rotors are warped!

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2004YZFR1

Or they could just have pad material built up on them and need a couple of good breaking runs to scrub the build up off.

Let us know what you find.

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spearfish25

I'm having the same issue for the second time. Both times now it's shown up after a track day. The first time I got so fed up that I just bought two new front rotors ($96 each from Courtesy Parts). Since it's happened again and these rotors are practically new, I'm going to switch back to track pads and see if I can wear off the deposits. If not, I have another rotor change in my future. So f'ing annoying.

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djtodd

Happened to me with stock setup. After swapping pads and to slotted rotors it hasn't happened since.

I should add that in my case it only happened after track days as well.

BGTV8

At the risk of teaching my grandmother to suck eggs .....

When tracking your car and you return to the pits/marhalling area, it is imperative that you do not leave the car parked in one place for more that a few minutes. I carry a piece of 4x2" timber and put it behind a tyre so the car cannot roll away and every 2 minutes, I allow the car to roll so the wheel rotates ~90 degrees, and repeat the process every couple of minutes until the rotor has stabilised and cooled (hopefully more uniformly that simply walking away from the car having parked it).

The reason is to make sure that one spot on the rotor does not stay under the (red)-hot pad for longer than 2-3 minutes max, as this causes the rotor to cool disproportionaltely around its diameter and you will get hot spots which are being "heat-treated" (actually, to be specific, these spots are being annealed) and these spots will lose hardness and you get differences in friction capability around the swept annulus of the rotor which will feel like a pulse under your foot which is a bit disconcerting - but if you feel a shake in the steering - then you have warped rotors - and they need machining or replacing.

You may also have brake pad material deposited on the rotor as noted in this thread.

Slotted rotors will help avoid pad deposits, but even with a brake cooling kit (unless the air is supplied via a 4"/100mm tube) will not avoid the need to "rock" the car in the pits - it is a really good habit to get into (and one you can delegate to your GF - or BF - we are not gender specific on the forum I think - so make your partner feel included and important)

RB

cossie1600

Never rocked my car, I just took it easy on the cool down lap