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Bigger brakes will not make the lap times lower for most modern cars. If you can do a full lap while braking at the limits of the tire's grip your brakes are doing all they can to slow the car.

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95 Mustang

I'm not expecting greatly reduced lap times with a BBK on my 92 Corvette.
However I am looking forward to the front pads lasting longer and not having to pray the rebuilt calipers from Autozone are the correct size and have no taper.

I'm ok with it being 2 pts, or free.
I already have 18" rims.

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NASA-SE Instructor, TT
1992 Corvette 383 - TTA
2012 season 383 going in March

needs to be a points mod - too many freebies already

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Ken Brewer - 1994 Toyota MR2 #6 TTF, PTF, E3
One of the NASA-TX Time Trial Directors

Maybe for all four... Gary's T1 kit is about 1/2 that for the fronts.

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2001 Quicksilver Z06 #4 - TT3/ST3

I think it's crazy how definitively people say their lap times won't improve with a better brake kit. I know that E36 brakes are good, so are some of other cars, but there are aftermarket true racing kits that will do wonders to your car. Even on something like my old GT3 that had amazing brakes - moving to a true racing Brembo setup made it even better. I think most try a 2K Wilwood setup and base their judgement on that, which isn't accurate. Now, hopefully people won't be dropping 5-7K on brakes for TT!

As far as lock up - a bad pad with too much initial bite can cause that. Does that mean you're stopping as quickly as you can? I don't think so. If you have the right brake setup and pad compound you can stop faster since it works together much better.

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Alex
SouthEast & Mid Atlantic GTS4 #312

It's $2600 no pads or lines

10-4... that's with rotors then. There are cheaper 2-piece rotors options like the DBAs I run.

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2001 Quicksilver Z06 #4 - TT3/ST3

I tend to agree with you. Probably makes you nervous. A lot about a fast lap is confidence. A dailed in good quality brake system is faster, mechanically. It is even better psychologically.

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NASA-SE Time Trial Director, Instructor

So what about people that are confident in stock brakes? I have hundreds of laps of traqmate data on stock brakes. I would go through a set of front pads in a weekend or less. So I upgraded to larger calipers, rotors and bias adjuster. They felt much better, and pads last over multiple events. Overlaying data showed no measurable change in braking time. Many cars will benefit more from the ability to adjust brake bias than bigger brakes. Street cars tend to have more front bias than is optimum for racing. A big reason is that street cars need to stop in the rain. lots of front bias is very confidence inspiring, (Think big front brakes and stock rears, with no bias adjustment.) because the car will wag-ass less, but that can make stopping distances longer.

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95 Mustang

My 88 CMC Mustang has the legal, by old rule upgrades, to its brakes. Other then locking the right front pretty often they do fine. Since I did not use brakes at T5 at Road Atlanta brakes were not its problem.

Under current CMC rules I see a lot of more brake upgrades. The tire also decides how good your brake performs. Running R888 are a lot different then the evil A6. On cars like the Miata and our 83 Supra brakes last a season (or two) and are not the limiting factor on a lap.

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NASA-SE Time Trial Director, Instructor