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03-19-2008, 05:57 AM | #4 |
135i Coupe Owner!
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Stay away from the cheaper drilled rotors, which are designed for show versus performance.
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2008 BMW 135i Coupe
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03-19-2008, 09:37 AM | #5 |
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Make sure you get some seat time before you think about brake upgrades. I test drove a 135 yesterday, and think I locked the wheels at like 4 mph. The brakes are legit. The first time you step on the pedal, it feels like they are going to rip the rotors in half. Food for thought
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03-19-2008, 11:28 AM | #6 |
Colonel
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Drilled brakes are generally considered inferior in terms of actual performance, but since Brembo does your brakes, you can probably get some generic ones.
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'08 Black Saphire/Black Z4 M Coupe
RIP Gretta: Blue Water/Lemon 135i. Died to save me. -ChuckV |
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03-19-2008, 01:28 PM | #7 |
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Personally, I use slotted rotors on the track. Unfortunately, you cannot buy solid rotors for the Porsche twin turbo, or at least I have not found them yet.
Not all "drilled" brake rotors are created equal! Factory Porsche rotors with holes are NOT actually drilled - the holes are cast into the rotor when it is made. Porsche uses this method to reduce stress-cracking. When cast this way, the metal molecules "flow" around the hole with less surface tension which significantly helps reduce cracking. Aftermarket "drilled" rotors are usually just that - a plain, solid surface rotor that has literally had the holes drilled through it. Although much easier and less costly to produce, drilling the rotors creates surface tension and stresses adjacent to the holes - which will promote cracking. So although factory Porsche replacement "cast hole" rotors tend to cost more than aftermarket "drilled" rotors, there *IS* a difference. The Porsche-supplied rotors will tend to last longer before the stress-cracking inevitably develops. Just food for thought....
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Alan
08 135I (AW/Coral Red - delivered 3/15/08 -- 13 Audi S4, 83 SC (trackster), 90 C2 (Sally's Carrera), 04 Avalanche Blingmobile |
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03-20-2008, 11:07 PM | #9 |
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Drives: 93 RX-7 R1, 135i
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should be out soon..I hope they are floating like the euro rotors are
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135i - Alpine White - Black Leatherette - 6-Speed - Sport Package - Aluminum trim - 6FL
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03-21-2008, 08:01 AM | #10 | |
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Quote:
If it's cosmetics you want, why not take a power drill to your current rotors, make 1/8" holes and color the inside with a black sharpie? Just an idea.
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135i built 2/14/08 SGM w/Black and AL, 6 forward gears
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