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Thread: Will Wilwood clear stock rim?

  1. #1
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    Will Wilwood clear stock rim?

    I am looking to upgrade my brakes. Does anyone know if Wilwood Forged Narrow Superlite 6R Big Brake Front Brake Kit
    https://www.summitracing.com/parts/wil-140-8797-d
    Clear stock rims?

  2. #2
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  3. #3
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    Sorry, don't mean to sound like a tool, but I just literally got the car (2001 z3m roadster). Not in front of the car right now to confirm. I will check and update when I am at home.
    That said, I am reading some posts and general consensus is that short of looks, there is no performance benefit with Wilwood bbk. I guess its a mute point now... thanks anyways
    Last edited by DimrBimmer; 10-12-2017 at 07:14 PM.

  4. #4
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    He's got an M Roadster, so the stock rims are 17x7.5 front and 17x9 rear Roadstars. I can't find my notes on offsets, but I'm sure someone has them.

    Marty

  5. #5
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    Will Wilwood clear stock rim?

    I think the fronts are ET41, no?
    Looking at realism.com, Roadstars are front ET41 and rears are ET8.
    LOL!!! ET8, is that possible!!??!

    Sent from my iPhone using Tapatalk
    Last edited by bluptgm3; 10-12-2017 at 08:44 PM.

  6. #6
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    E36/7 E36/8x2 E39/2 E46
    Yes. ET8, and many throw a 15mm spacer behind them for an effective ET of -7.


    A little story. Many moons ago on a different forum (listserv, actually), someone figured out that you could bolt the 6 piston GSXR calipers onto the RF900 forks, and they RAVED about how much better they were. Okay, sounds good. I call up a friend that is in the bike salvage business and procure a pair of almost new GSXR calipers. The first thing I notice is they don't just bolt on. Well they do, if you don't mind them being offset to the rotor by 1.5mm. So I made some spacers to properly mount the calipers. The second thing I noticed is the stopping power did not change. Not at all. Me, being me, starting thinking and measuring.

    The master cylinder did not change. Therefore logic would say that the total piston needs to remain the same. Measuring the pistons confirmed, total area was the same for the 4 pot and 6 pot. No gain or loss in mechanical leverage, or apply pressure here.

    The pads, after much measuring were nearly the same surface area. And the same material. No direct advantage there. However the pads were longer and narrower; less swept rotor area, but more concentrated to the outside. Likely a net loss and a net gain mostly offsetting. Beyond my skills to analyze precisely.

    Thus, there should be no real gain. And I did not notice any gain. When I reported the findings and supporting maths back to the list, it was met with much hate and disbelief. S'okay, I was used to it then, and I'm used to it now.


    OP, have you actually DRIVEN this car yet? The stock brakes with the correct pads are pretty good Stainless lines will bring the feel right up. You have lots of places that need funds, quit trying to find more without real world info.
    Last edited by rf900rkw; 10-12-2017 at 09:50 PM.


    /.randy

  7. #7
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    Quote Originally Posted by rf900rkw View Post

    OP, have you actually DRIVEN this car yet? The stock brakes with the correct pads are pretty good Stainless lines will bring the feel right up. You have lots of places that need funds, quit trying to find more without real world info.
    I wouldn't call it driving, but yes, I drove it around few days ago. Up and down driveway... lol. Not I put on about 300 miles last Sunday. Picked up hardtop from someone on Craig's list. We installed it on the spot. It brakes pretty good. But upon inspection looks like both pads and rotors probably got another 5k on it. So I got time, because I am not planning on taking it on the track until next spring. So I am just staring to do research. Hence all the redundant questions that all the noobs are asking.

  8. #8
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    Come on Randy, just admit it ... the stock brakes suck because they are STOCK! And, uh, they look kinda small. And, uh, they only have one piston, and how can that even work? Won’t only one side of the brake even clamp? Need better. Because race car backwards is race car.


    Sent from my iPhone using Tapatalk
    '99 Z3 2.8 Coupe - SCCA ITR race car [Whoops, sold it! Now coupeless.]
    '03 540iT M-Sport - the daily driver (now with 6-speed!) [Damn, sold that too!]
    '04 Suburban 2500 8.1L - ultimate tow vehicle
    '73 Volvo 1800ES - orange. [sold]
    '16 MINI Clubman Cooper S

  9. #9
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    Quote Originally Posted by JoshS View Post
    Because race car backwards is race car.
    ...it's actually 'rac ecar'. Which is a type of Norwegian goat cheese used in the making of condoms for whales.

    "You don't win silver....you lose gold."

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