BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      01-17-2013, 07:24 PM   #1
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Brembo Upgrades for 135i?

Ok, bit of a brake noob, stick with me.

the 135i has Brembo 6 piston calipers up front and 4 piston calipers in back...

rotors are 338x26mm in the front and rear 324x22mm...

Why are there no direct replacement rotors from Brembo available in cross drilled and/or slotted set up? am i missing something?

also, who has done cross drilled and/or slotted rotors and can report as to whether or not they improve/worsen braking performance?
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      01-17-2013, 07:39 PM   #2
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I believe the rears are 2 piston.

There are plenty of replacement rotors by other manufacturers.

I'm running slotted discs on my rear. It makes no difference.
- 08 135i - Wavetrac LSD, AST 4100, Swift springs, Brembo GT brakes, M3 front sway, Meyle HD links, Dinan Camber plates, Whiteline subframe bushings, M3 rear guide and upper link, M3 front control arms, HP custom M3 front Strut brace, Megan rear control arms, F30 brake shields -
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      01-18-2013, 09:57 AM   #3
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There brembo rotors available as you's the bmw perf rotors. Now if you're asking about floating 2 piece rotors, that's a different story. There's a side of brembo that makes oem stuff (like our calipers and braking setup) and then there's the brembo race/perf side. Essentially they're under one hat, but act as two separate companies. Thats what I was told by the US importer of brembo race products at least.
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      01-18-2013, 11:45 AM   #4
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2010 135i  [4.37]
not even worth upgrading to cross-drilled or slotted rotors unless you're going for looks. they won't offer any performance advantage plus they cost way more than factory provided discs. want to improve braking performance, start with pads and fluid and once you pass their limit on the track move to a BBK
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brakes, brembo, cross drilled, rotors, slotted

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