Hi Guys
Has anyone tried to fit 420mm discs on the front of a b7 rs4 ?
I currently run 20" wheels ..
Here is a pic of my car for the hell of it
420mm discs
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TimberTech RS4
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Re: 420mm discs
Have a look on insta for kimboyrs4 he’s fitted 410s
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Re: 420mm discs
He had to machine down the Caliper to get it to fit under the wheel. Also some wheels won’t allow the figment. Depends on the profile.
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Re: 420mm discs
OT. Have you got laminex on your headlights ??
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Softishman
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irn_bru_ce
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Re: 420mm discs
How much heavier are 420mm Vs OEM, can't imagine it does much for the handling
Current - 07 Avus Silver B7 RS4 Avant : Ceramics, Non Valved Non Res Milltek, K&N filter, SS+, adaptive xenons, black optics, KW3, 034 rear ARB, rear drop links & front adjustable top arms.
Past - 00 Saxo VTS : 266mm Mi16 calipers, Quaife ATB, 20mm torsions bars, 24mm ARB, Vibratechnics mounts
87 Vauxhall Belmont: 1.6L, 15" rockford fosgate subwoofer in 3 cuft sealed box, 5ch Rockford fosate amp, JBL components
Past - 00 Saxo VTS : 266mm Mi16 calipers, Quaife ATB, 20mm torsions bars, 24mm ARB, Vibratechnics mounts
87 Vauxhall Belmont: 1.6L, 15" rockford fosgate subwoofer in 3 cuft sealed box, 5ch Rockford fosate amp, JBL components
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Softishman
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Re: 420mm discs
420 ceramics are lighter then oem 365 steel
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Re: 420mm discs
Here’s the thing, if your planning on running 420’s what are you doing to upgrade the master cylinder or brake booster?
If it’s just for looks then fine but you’ll never get the full potential of the disc as the cylinder can’t pump enough fluid effectively.
If it did you’d be over braking on the fronts.
Easiest way to see if they fit is to use a cardboard cutout and centre it on your hub.
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If it’s just for looks then fine but you’ll never get the full potential of the disc as the cylinder can’t pump enough fluid effectively.
If it did you’d be over braking on the fronts.
Easiest way to see if they fit is to use a cardboard cutout and centre it on your hub.
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Softishman
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Re: 420mm discs
It has nothing to do with the discs, is the area of the pistons on the caliper. Oem is 8-piston calipers. Brembo caliper for the 400mm and the 420mm is only 6-piston but a little bigger area so the brake pedal travel is about the same. If you choose the bigger Alcons calipers for the 420mm disc they are 8-piston and the pedal travel should be a little longer for the same braking power.
@softishman on IG
Check out my RS4 there!
Check out my RS4 there!
Re: 420mm discs
I think you misunderstood me.Softishman wrote:It has nothing to do with the discs, is the area of the pistons on the caliper. Oem is 8-piston calipers. Brembo caliper for the 400mm and the 420mm is only 6-piston but a little bigger area so the brake pedal travel is about the same. If you choose the bigger Alcons calipers for the 420mm disc they are 8-piston and the pedal travel should be a little longer for the same braking power.
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Softishman
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