thunderous1
a proud new owner
- Location
- L O N D O N
- Car(s)
- black magic mk5 gti
just got a bargain full front set, do these go straight on or what else do i need to fit these bad boys :readthethread:
V
TT-RS BRAKE FITTING on mk5
- Thread starter thunderous1
- Start date
physically it does bolt right on ...
Sadly you'll also need a new master cylinder and booster:
http://www.golfmkv.com/forums/showthread.php?t=175147
If you have the small 22.22 mm MC (which continental euro Mk.V GTIs have),
that one is WAY to small and give you poor pedal feel and pedal travel !!!
Sadly you'll also need a new master cylinder and booster:
http://www.golfmkv.com/forums/showthread.php?t=175147
If you have the small 22.22 mm MC (which continental euro Mk.V GTIs have),
that one is WAY to small and give you poor pedal feel and pedal travel !!!
thunderous1
a proud new owner
- Location
- L O N D O N
- Car(s)
- black magic mk5 gti
wont i need different offset wheels?
polo classic
Ready to race!
- Location
- Oslo
Depends on the wheels. The curve of the inside of the spokes and pad height are more important than offset.
I belive TT-RS use 9x19 ET 52, the other TT's does anyway
bostonaudi
Go Kart Champion
- Location
- Charleston, SC
- Car(s)
- 1995 BMW M3
What does the RS use for brakes? If the same old 345's from the R32 the stock master cyl will work fine.
lippyjump
Ready to race!
- Location
- San Mateo, CA
Why? I have driven 3 Gti's with big brake kits. 4 pot Stoptech, 4 Pot Brembo, and 6 piston Porsche Cayenne set up.
The 6 piston Cayenne set up is a much larger than the 4 piston TTRS caliper. The brake pedal throw was longer, but it was tolerable and heel/toe was still no problem. Pedal felt great as well.
If you go the 6 piston route I would recommend updating your master cylinder, but even those that haven't are still happy with their brakes.
Have you tried the TTRS calipers on a gti? The rotors are absolute :happyanim::happyanim: but a 370mm rotor sure wouldn't be much fun when it comes time to replace... :thumbsup:
Why? Because these Audi TT-RS calipers are designed to work with a 25 mm master cylinder.
Audi didn't intend to fit this brake to a Golf.
I also NEVER would install Cayenne calipers to a GTI. The longer pedal travel you experienced
indicates there is something wrong. More specific: the calipers pistons are too large. This will
change brake balance, brake booster charateristics (keep im mind the GTI one is 'dual rate'),
hysteresis and brake assist threshold.
Shurely the car will get increased stopping distances !!
Why spending that money to make things worse?
Volkswagen spent years to optimise braking on the GTI. Of course it is possible to improve
things, but to make it better you need to know about it. Brake hydraulics, brake electronics,
pad materials and so on.
PS: no bracket required !! Brackets are part of the caliper:
Audi didn't intend to fit this brake to a Golf.
I also NEVER would install Cayenne calipers to a GTI. The longer pedal travel you experienced
indicates there is something wrong. More specific: the calipers pistons are too large. This will
change brake balance, brake booster charateristics (keep im mind the GTI one is 'dual rate'),
hysteresis and brake assist threshold.
Shurely the car will get increased stopping distances !!
Why spending that money to make things worse?
Volkswagen spent years to optimise braking on the GTI. Of course it is possible to improve
things, but to make it better you need to know about it. Brake hydraulics, brake electronics,
pad materials and so on.
PS: no bracket required !! Brackets are part of the caliper:
lippyjump
Ready to race!
- Location
- San Mateo, CA
The stopping power on the Cayenne kit was IMMENSE. Much stronger than OEM. Its the same as the ECS St5 kit for sale. It was my understanding the dual rate brake booster on these cars was operated by an inertia valve, not travel. This wouldn't be affected by the caliper choice...
But back to point, MANY people on this forum have 4 piston BBK kits with pistons that look larger than the TTRS ones. Everyone loves their upgrade to a 4 piston kit.
Years on the Gti brakes? I think days, maybe weeks. Where are you getting this information?
Those calipers don't look much bigger than on a Boxster either, and those feel perfect on these cars.
bostonaudi
Go Kart Champion
- Location
- Charleston, SC
- Car(s)
- 1995 BMW M3
If Audi designed the RS calipers to work with a 25mm master cyl I'd be inclined to match up the correct parts. The perceived size of the caliper is less important than the piston area you're trying to push. There are plenty of upgrade paths that will work fine with our stock master though. My car worked well with R32 brakes front and rear, I've driven other dubs with bigger brakes and didn't note anything weird or wrong with the stock master or the brake action.
PatientlyWaiting
is waiting patiently
- Location
- NYC
I had a set of 17z 6 piston Brembos and saw no increase in pedal travel. If anything, after the steel braided lines necessary for the kit, the pedal was firmer.
lippyjump
Ready to race!
- Location
- San Mateo, CA
Never measured with a caliper, or been able to find exact measurements, but the TTRS caliper pistons look smaller than that of StopTech to the eyeball.
I don't see what the hesitation is to just bolting these on, bleeding them, and seeing how it goes? Your only limiting factor now should be getting your wheels to clear, other than that go and give it a try!
Many people do silly things. No reason for me doing the same.
"look larger" includes you don't know it.
At least you'll get an increase in pedal travel of 15 %. Real world, not believe.