All Things Mk5 > Performance Modifications
Brake Confusion!
Shoduchi:
--- Quote from: Pudding on February 22, 2017, 02:02:17 pm ---You are a shining example of the opposite of "What do I need to make these 56 pot McLaren P1 calipers fit my Ed30?" type stuff that seems to be the culture these days :smiley:
I have yet to find a requirement to move away from the standard brakes. I don't do track days, because it's a road car.....I'll buy a Caterham when I do track days :smiley:
I think most folk who feel the standard brakes are inadequate for road use....
...are driving way too fast on public roads and / or leaving the braking way too late.
...have f'cked rear calipers.
...have a vacuum pump seal leak.
...have crap pads.
...have worn dampers.
...etc.
Seriously, I have braked from some pretty silly speeds I'm not proud of and the standard brakes were absolutely fine. Bigger brakes improve the initial bite because of the torque leverage and bigger pad area, but you cannot deploy more stopping force to the tarmac than the tyres are capable of. Standard brakes can lock the tyres just as easily as massive brakes. The only difference is pedal effort. I'd rather save my money and push the pedal harder :smiley:
--- End quote ---
At high enough speeds the OEM brakes can't lock the tyres, even if you stomp the brakes as hard as you can. But for road use only the R32 and 7R brakes are plenty enough. If you want a lighter setup the NQSBBK should be the best option.
Just the track use requires a bigger and better setup. :smiley:
Dan_FR:
I've managed to overheat the standard 312s (standard disc and pads) on the road, but I am a heavy on the brakes. They bite and stop well, but fade seriously quickly after a few hard stops. S3/R32/Cupra 345mm setup I've yet to experience significant fade although spirited driving is on hold at present until other issues are resolved.
At the end of the day its a standard setup on the Leon Cupra at a 'mere' 240hp so its hardly overkill for a stage 2 Ed30 with 100hp+ on top
Shoduchi:
I'm in the process of getting good track use only pads. Chose the Carbotech XP20. I'm sure it will come the time when I'll want to get 2 piece disc to decrease the weight on my front axle.
AJP:
I found the standard brakes were really quite easy to cook. Fade was never far away. Actual stopping power was quite good, but only for a few big corners.
The mk7 PP/Clubsport setup I've got now deals with heat much more competently. Stopping power is moderately improved, but that wasn't the main factor in upgrading. It was to improve the resistance to fade. So that's the box ticked.
They're adequate. No more, no less.
There's nothing wrong with bigger 4/6/8 pot kits, as long as the piston area is within tolerance of the master cylinder. Dedicated track cars might find the limits of the mk7 setup a little too quickly. And a good kit with two piece discs does look the b*llocks, you can't deny it.
EDIT: Just realised I've pretty much just rewritten what Dan said! Seems a common theme, anyway: It's not the braking force, it's the fade.
rich83:
--- Quote from: Shoduchi on February 22, 2017, 04:19:59 pm ---
--- Quote from: Pudding on February 22, 2017, 02:02:17 pm ---You are a shining example of the opposite of "What do I need to make these 56 pot McLaren P1 calipers fit my Ed30?" type stuff that seems to be the culture these days :smiley:
I have yet to find a requirement to move away from the standard brakes. I don't do track days, because it's a road car.....I'll buy a Caterham when I do track days :smiley:
I think most folk who feel the standard brakes are inadequate for road use....
...are driving way too fast on public roads and / or leaving the braking way too late.
...have f'cked rear calipers.
...have a vacuum pump seal leak.
...have crap pads.
...have worn dampers.
...etc.
Seriously, I have braked from some pretty silly speeds I'm not proud of and the standard brakes were absolutely fine. Bigger brakes improve the initial bite because of the torque leverage and bigger pad area, but you cannot deploy more stopping force to the tarmac than the tyres are capable of. Standard brakes can lock the tyres just as easily as massive brakes. The only difference is pedal effort. I'd rather save my money and push the pedal harder :smiley:
--- End quote ---
At high enough speeds the OEM brakes can't lock the tyres, even if you stomp the brakes as hard as you can. But for road use only the R32 and 7R brakes are plenty enough. If you want a lighter setup the NQSBBK should be the best option.
Just the track use requires a bigger and better setup. :smiley:
--- End quote ---
Exactly. You cannot deny that big brakes offer better braking and shorter shopping distances.
If you are locking your wheels us with 312mm discs then you need better tyres.
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