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09-24-2012, 09:57 PM | #23 | |
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09-25-2012, 10:27 AM | #24 | |
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If you read through my first post you'll see all the cliff notes. Rotors run much cooler than stock...cooler equals longer lasting components and less change of brake fade. RB rotors are harder the oem. Harder equals more resiliant and longer lasting components. TheHACK had put 4000 TRACK miles on his rotors and they were still going after 4 years of abuse. I have never heard of a OEM rotor lasting that long. Most people that track OEM rotors have to replace them fairly frequently in comparison. I'm working on RB to include the rear rotors at a later date, they are currently working on them. |
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09-25-2012, 10:43 AM | #25 | |
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I would be interested in the complete set + pads / free studs. i will def decide in a couple days and get on the groupbuy.
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09-25-2012, 12:01 PM | #26 |
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How much do the OEM rotors last (street not track)? Asking to see if it's worth it for me to pick these up at GB price, or if I should just wait until I need to replace them.
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09-25-2012, 12:13 PM | #27 |
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Actually, OEM lasted me a hell of a long time. I got my car with 17k miles from the previous owner, and looking at the maintenance record, they had never been replaced before; only the pads had been provided under warranty. I proceeded to put on many street miles and several track days before they were worn down to spec enough for the stealershit to replace for me. That was at almost 30k miles, and not before I completely raped them at Laguna Seca (literally trying to fade the crap out of them for the last two track days out). So all in all, if street driven only, I'm willing to bet that with proper bed-in and usage, OEM rotors can last at least 30k miles on their own. So they're not shabby at all, even at their commanding price point.
And if it's true that RBs are even better, I'd splurge for higher performance AND cheaper in the long run. However, if I were certain to not have any track days whatsoever, I'd just stick with OEM. |
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09-25-2012, 12:42 PM | #28 | |
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Know though that RB rotors should last double if not longer than OEM. Like the OP states, one member had the RB rotors for 4 years and 4000 miles of track duty with miles of life left. No way OEM rotors would do that. |
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09-25-2012, 12:43 PM | #29 |
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Signed up. We need 3 more! great price.
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09-25-2012, 12:49 PM | #30 | |
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Car has never seen the track, but the stock's last quite a while. With the groupbuy and the discounts, you're pretty much paying 300$ more for a set of Racing brake, high performance rotors that simply twice as durable. I'm sure the oem's will last just fine. As of now I'm sold on the racing brakes. Any z4m owners that currently has RB can perhaps elaborate.
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09-25-2012, 12:51 PM | #31 |
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Update!
Anyone signed up here for GB is eligible for the same discount for PU kit and rear two piece rotor that will be available later. It's awesome that RB will allow those of us who participate now to purchase later at the same discount, even if they don't sell 10 PU kits or rear rotors. |
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09-25-2012, 07:28 PM | #32 |
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Beta,
My OEM rotors/pads is at 61k now. It is probably still good on street still, but will not trust them on track. RB rotors have advantages over stock. It is stronger, 2 piece designed, and more even cooling. Stock setup is fine for street. My view is why not upgrade to better components when cost factor minimal. I figure its better to have more braking power. The option for PU upgrade is very thoughtful of RB. With discount, a complete rotors/pads/calipers are slightly over $1800 for front axle. I can get complete F/R for same as some other BBK for one axle. |
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09-28-2012, 12:34 PM | #35 | |
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with really aggressive driving and a few track days. i really should have swapped some track pads in there but i am VERY impressed with how well the oem braking system is on our cars. i was doing some research on replacing my braking system now that i have a decent lip on my rotors and my pads are cooked - and i recall The Hack saying we probably have the best braking system from the BMW factory.
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09-29-2012, 02:15 AM | #36 | |
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Just FYI guys, RB is also planning a PU upgrade for the rears as well...so you'll have upgrade paths for all 4 corners. |
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09-30-2012, 08:51 PM | #37 |
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I'm in.
The PU upgrade kit was just too tempting. Damn you Kalare, you come over to this forum and the next thing I know I'm spending more money! I asked about the "complete kit" the oversize BBK (360x30 - Same as M3) since I'll probably do the PU upgrade with the rotors. I have a sense that it's overkill, and unless there's something similar available for the rear there are probably bias issues. Not budget minded either, like the regular PU upgrade. |
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10-01-2012, 09:49 AM | #38 | |
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9 down, 1 to go! Almost there! |
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10-04-2012, 01:36 PM | #41 |
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Bump!
Just need one more for the 20% discount! That will drop the effective price to $577 per pair of rotors or $288.50/rotor! $712 (list price) - $30 (pad delete) - $105 (wheel stud kit value) = $577. Remember, these rotors are 2mm thicker than stock, and have a 2mm runout to replacement vs. 1.6mm for stock. Hats are reusable, only rings are replaced. Should have a much longer life than stock. Getting in on the Rotors also qualifies you for the upgrade to 4 piston BBK at a cost of $1,184 (which is a steal). Getting in on the GB also qualifies rear rotors and rear BBK at the 20% discount prices as well. Heck, there's even an upgrade path (using same hats and BBK calipers) to larger E90 M3 sized rotors! |
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10-04-2012, 03:42 PM | #42 | |
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Also note that in addition to 25% more wear till minimum (which gives an automatic 25% more life) the following is also true: -OEM ZCP/MZ4 has been tested at 145 Brinell hardness, RB tested at mid 190's -RB will run cooler than an OEM ZCP/MZ4 rotor -Most reviews of their rotors online consistently say they get longer life out of the rotors, including one member who has these exact rotors. Add it all up and I wouldn't be surprised if you got double the life of the OEM rotor. |
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10-04-2012, 04:40 PM | #43 | |||
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What is the price?
RacingBrake GB thread says : Quote:
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I think I know what they are trying to say... I get a gift of wheel studs so "I save" 105$. But my cost remains 712$ - 30$ (no pads) : 682$ And who can convince me I need/want this Progressive Upgrade Kit (PU)? Oh and the GB thread makes the mistake again of quoting 577$ for rotors : Quote:
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10-04-2012, 05:32 PM | #44 |
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Tony, the total cost to you, if we get the 20% discount, is $682 for both front rotors without pads. The "effective cost" is $577, because they're throwing in a set of wheels studs they're valuing at $105 dollars. (Meh, but it is worth something, and having these makes changing wheels super easy.)
The real value here isn't just the discount, but the additional rotor thickness and 2mm wear factor. Turner has new stock type rotors for $524, which is a 158 dollar difference. I think OEM runs about the same price. But the RBs have 25% greater wear capacity, are slotted not drilled, and reported to be harder (denser). So actual durability may be higher than just the 25% great wear factor. I'm getting the PU upgrade for several reasons. First, because it should have a better pedal feel. Second, swapping pads (street -> track -> street) with the stock calipers is getting old and it's a relative breeze with the PU calipers. Third, I can't lie that about the fact that they just look damn cool. Fourth, the rear PU upgrade (and rotor) will really make swapping pads on all 4 wheels a breeze, and should really improve feel. |
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