02-12-2013, 05:44 PM | #1 |
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Clunk sound "fixed" with H&R springs
Early post here: http://f10.m5post.com/forums/showthread.php?t=656996
Gave up on waiting for BMW (which now claims "clunk sound" is a constructive specialty of M5) and installed H&R springs ($350) yesterday at the service. The car is about 1" (25 mm) lower now. Advantages: - Clunk sound is gone - Comfort is the same Disadvantages: - Suspension warranty void. BMW Service put this as a precondition before agreeing to install the springs. It took them a full work day with 2 technicians to install the springs and cost about $550. Knowing that this work requires rear seats, speakers etc to be taken out prior to installation I didn't want to take the car to unauthorized and questionable services that I don't trust. - Looks worse. As a result of lowering, the previously proportional fender gap is now disproportional. The space gap on left and right of tires looks like rice "low rider" with tiny wheels. - Low clearance. Middle bottom of my car scratches/grinds the ground each time I enter and exit garage in a diagonal slope. In an effort to fix BMW's factory defect I now feel like I'm screwing myself and the car even more, only because BMW has its head up their butt about this problem. I'm be OK to take it back to BMW service and having to pay another $550 to put the old springs back, but I don't know if they would return suspension warranty or not as it's been 48 hours with me driving the car like this. What do you guys think and recommend? Last edited by singularity; 02-12-2013 at 06:55 PM.. |
02-12-2013, 06:00 PM | #2 | |
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If I were you I would give it a chance. I mean you were obviously fed up with the clunking sound from the stock suspension and took your own action to rectify the defect. It is unfortunate the BMW has decided to void your spring suspension warranty. Many people get this done at a private tuning shop. By the way how is the ride quality? I've only heard one person say that the ride quality is too harsh and they actually switched back to stock. Just give it some time and if after a while you can't stand it because of the look, or ride quality, or whatever, then just switch back.
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02-12-2013, 06:30 PM | #3 |
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You are also the first person (out of dozens) to have installed H&R and have reported the clunk sound fixed! Most say the clunk persists unless you do a full coilover replacement (KW).
I think the car looks great lowered - spacers will also flush up the wheels and make it look perfect. Agree that BMW shirking their responsibility here is unacceptable and very frustrating.
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02-12-2013, 06:33 PM | #4 | |
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I'm most concerned about these gaps (not my car's picture, mine is on winter wheels and looks like a cow) |
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02-12-2013, 06:36 PM | #5 | |
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H&R springs fixed the clunk sound for nordic@telia.com also http://f10.m5post.com/forums/showpos...&postcount=141 |
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02-12-2013, 06:38 PM | #6 |
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As Rob stated--- spacers.
BMW offsets while more aggressive than most OEM's are still not aggressive enough. Your parking lot must have a large undulation for the car to hit. I have not hit once where I have driven. I know that if my ground clearance where I reside was very close with the stock suspension; I might have not lowered it.
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02-12-2013, 06:47 PM | #8 | |
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I agree, my parking lot has abnormal vertical bends, it's the drawback of my parking lot, not the car. When I drive in I have to turn right, and immediately left, while there is a slope. I think it's the middle section of exhaust that hits the ground. I first 'hit' the ground after driving home with new Eisenmann Race mid section, probably because of a larger diameter, but it wasn't hitting when I drove OUT of the garage, now it hits both. Anyway it's not an issue. Will do as soon as I get a chance to drive in sunlight. |
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02-12-2013, 06:48 PM | #9 |
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Hmm , I can not confirm the H&R or Hartge springs do actually solve the rear clunk at all.
I still have it on rare occasions. You might have been lucky that it went away due to some lucky positioning of the spring and perch. As for looks there are subjective and some like and others don't but I'd agree with the factory wheels it does look lower than with other wheel designs. But still not too low though.
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02-12-2013, 06:52 PM | #10 | |
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02-12-2013, 06:55 PM | #11 | |
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Hopefully you're lucky and the clunk is gone for good. The clunk is more noticeable with passenger(s) in the car (weight/distribution) and I am usually on my own so don't hear it that often. It doesn't bother me too much and I'll wait until I hear news from folks at BMW DE
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02-12-2013, 06:56 PM | #12 |
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Winter wheels look terrible on the M5 imo, especially in white for some reason (maybe b/c of the lack of contrast). Yes, some winters are better than others, but nothing sets off a nice drop better than the OEM 20s or a nice set of 20" aftermarkets. I think once the OEMs are back on you will love the look, especially since the ride doesnt seem to have changed at all for you.
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02-12-2013, 07:15 PM | #13 | |
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02-12-2013, 07:16 PM | #14 | |
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02-12-2013, 07:17 PM | #15 | |
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Interesting... what replacement parts did they change? I watched my private tech do the entire install and no parts were replaced and none expired during removal. The only parts that were replaced were the springs.
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02-12-2013, 07:38 PM | #16 |
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They mentioned that it was just expendables, which are usually rubber, gaskets etc, I didn't check the receipt
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02-12-2013, 07:48 PM | #18 |
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It does take away the clunk those guys were just slow I guess, they said they lack previous experience and work from BMW instructions, car is "complex" and are extra careful not to scratch interior leather. Or they are just slow to take more money
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02-12-2013, 07:50 PM | #19 |
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I can confirmed that my clunk noise went away as well after the H&R spring. I usually hear it going over speed bumps, but now I don't. I put over 1,200 miles on them so far. Hopefully it is gone for good.
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02-12-2013, 07:51 PM | #20 | |
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02-12-2013, 07:53 PM | #21 |
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I have a set of Macht Schnell spacers for sale if you want them singularity. They are brand new, never installed. Not sure if it is more cost effective for you to buy from me and ship or to purchase from a more local source. Just throwing it out there.
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02-12-2013, 08:21 PM | #22 |
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Thanks for the offer Rob and sure, I'd be interested in buying them. Because I've never put spacers in the past and lack of knowledge, my only concern would be what is technically correct and safe for 300+ km/h driving? I'm assuming spacers don't get compressed over time where lug bolts would not be tight against the wheel holes, or even worse, break at 300 km/h.
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