I'm running the Audi TT setup with a 16 inch wheel. 312mm Brembo rotors. I think that rotor size is the largest you can fit with a 16 inch rim.
Pros: largest fit with 16 inch
Vehicle:
Audi TT
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I run audio TT front rotors (12.3 instead of 11.3), aggressive pads (ferodo DS2500) and racing brake fluid (motul rbf 600) and even on the track where you have to do some high speed stops (125-45) I havent really seen much brake fade.
Pros: little brake fade
Vehicle:
Audi TT
FWIW, I had 225/45R17 Nokian Hakkas on my 2001 TT Roadster, and I had absolutely no problems on hard-packed snow or loose, slushy wet snow. I distinctly remember leaving a big, jacked-up Jeep with all-terrain tires in my wake at a stop light in about 8 inches of unplowed snow!
Pros: no problems on snow
Vehicle:
Audi TT
Brembo's latest big brake kit with 1-piece rotor comes with powerful 4 piston calipers, carriers, stainless braided brake lines, option of race or street pads, and 13" Brembo race rotors! Calipers colors are available in black, red or silver. These rotors have directional veins and are either available in cross-drilled or slotted options. The 13" 1-piece rotor can absorb and dissipate much more heat without warping than most 2-piece rotors. Using Goodridge DOT approved brake lines for solid pedal feel you have your choice of pads for street, autocross, or race at no extra charge. Believe it or not the Brembo 1-piece kit is still lighter than the factory brakes!
Pros: lighter than factory brakes, solid pedal feel
Vehicle:
Audi TT
As for Wilwoods - they are good but require more maintance due to the lack of a dust boot/seals on the pistons - unless they've changed that now. I had StopTech's on my TT and they were excellent. Of course i'd use Porterfield RS4 pads rather than the stock Axxis that comes with them, but I was very impressed with the fit and finish as well as overall power and modulation of the StopTechs.
Pros: excellent fit and finish, overall power and modulation
Cons: more maintance, lack of dust boot
Vehicle:
Audi TT
My brakes on the front went at around 30K. I bought Zimmerman crossdrilled rotors, stainless brake lines, Mintex pads, and new fluid for all four wheels. I had the local Midas shop do the complete install for $200.
Pros: better brakes, good install
Vehicle:
Audi TT
Mileage: 30000 km
I have the TT brakes too, and I installed ferodo! the best pad you could buy... performance there is no comparison, ferodo are for racing aplication BUT, they make a lot of dusk....
Pros: best pad, racing application
Cons: make a lot of dusk
Vehicle:
Audi TT
I found a nominal improvement in braking power and feel with the 12.3". But as NOVAdub stated, the biggest impact was on repeatability.
Pros: improvement in braking power
Vehicle:
Audi TT
I've already had my 3.2 TT at the track (same brakes) and after the 3rd session (out of 5) the brakes began to fade. Also by upgrading you would also get a weight saving although with these HUGE brakes prob the same (lol). Actually I still think even with these you'd save 20-30lbs for both corners.
Pros: weight saving, cornering improvement
Cons: brakes began to fade
Vehicle:
Audi TT
Not true. The maintenance schedule for the belt is 105,000 miles. Many of the pumps with plastic impellers fail before that. The plastic composite seems to age and become brittle after 70k or 80k miles--some sooner and some later. But they do fail. This is what happens:
Cons: plastic pumps fail early
Vehicle:
Audi TT
Mileage: 70000 km
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