55wagon

what do I have to do to keep my brake from overheating on a road course.
In a 5 session day. after the 3rd session the brake overheat warning light stays on. and I have to drive around the padock like a idiot for 15 min after each session.

I have stock rotor and amg brakes. Porterfield RS4 pad.
I know Evotech rotor might help..

bbearden

You've got great pads, the only thing I could think of would be the upgraded rotors as they're lighter (not an integrated hat and rotor design) and should dissipate heat quicker.

jcjmw

You take your wagon to road courses!!! You are my hero!!!

MARK CUMMINS

Has the Brake fluid/system been flushed ?

With old fluid the boiling point will be lower than fresh fluid

55wagon

hell yea.. It kick ***. well, I am in group A...
I think it handles really well. it was corner balance.. 51f/49r 50/50 side to side.

behind me is my friend's yellow 996. the funny part was after the session. they came up to me with instructor saying "F$#k, we were trying really hard to keep up with you" and he was CHP cadet.

BTW.. also pass a 997 GT3 RS..... It was a new car, first time tracker.....

55wagon

yup it was flush with motul dot 5 brake fluid..
BTW the motul race oil, is smooth... but so $$$.

it is the stupid benz sensor.

jcjmw

THAT IS JUST AWESOME!!!!!!!!!!!!

Can explain further about the sensor? You mean the sensor was broke and you were really not overheating the brakes?

Karlson

The R4S also does not have provisions for brake sensor or backing plates (although you can transfer the backing plates from your stock pads over). Probably it got lose.

To OP: Are RS4 really little noisy when cold? I am planning to get new pads, but can't decide what do I want.

motorkas

Mikesamg

I took just my regular E55 to Thunderhill and everyone kept asking what else I had in the garage if this is what I was using as a track car haha. Some Subaru guy came up and said man you came around turn one, I saw a puff of smoke and you were gone! My stock brakes had no sign of fade but they were burning my hand when I would check the tire pressure between sessions if I wasn't fast at checking it. What track did you take the wagon too? Did you have a baby on board sign hanging in the rear window?

e1000

I wonder how the overheating sensor works. 2-piece floating rotors will perform better, but only from the perspective of that they are lighter. I think the biggest problem you're running into is just the sheer weight of the car itself. At around 500 lbs over the sedan, that's a lot of weight for the brakes to stop. My suggestion would be to explore some form of brake ducting. Routing some ducting into the wheel well area right onto the caliper would probably go a long way to keeping your brakes in acceptable operating temperatures.

lidas

Do some trackdriving with my wagon to and have exactly the same problem.
Tryied new oil and ceramic pads but still the same problem. So next step will be 2-piece rotors. but i think it's like "e1000" said we have the weight against us.

tgoss

Evosport rotors seem like they would help out.

Your wagon rules

jcjmw

Holy smokes, am I the only wagon that is not track driving? I am starting to think that if you own a E55 wagon you must road course / track drive!

55wagon

I was at thunderhill..... how fast did you hit in the front straightaway... I hit 135mph...

55wagon

DO IT...............................

55wagon

I think so..

I will have no weight problem anymore.... brought myself a mini copper S. dieting at 2378 pounds. w/ full tank gas.

Mikesamg

About that, they had us going in reverse which slowed me down. Still I was surprised how great she came out of the corner, I wasn't worried about her kicking out at all. I was beating a Dinan M5 though haha!