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      07-11-2017, 04:53 AM   #1
Jimbooo
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input please from anyone with H&R Sports fitted

Update - Problem solved, see page two for solution! with video..

Hi All,

before i get the natural response of "this is what happens when you go the cheap route on suspension" lol ive recently fitted H&R sports (30mm drop all round) to my 2016 M4 and am having a few issues.

The car was aligned using a hunter system after fitting (before springs had settled which isnt ideal).

first issue im having is there is a clunking noise coming from both front sides that i notice when going slowly over bumps. the place that fitted the springs tried to fix it and ended up taking it all off and fitting again. The noise went away but after 1000 miles its back again. someone mentioned it might be the bushes that are now taking more strain and have gone but the car has only done 18K so im dubious of that being the cause.

second issue is the behaviour of the rear end after the spring change. where it used to be a progressive overstear when getting on it out of roundabouts, bends etc it now wants to hop. its quite unnerving when you are balls out flooring it and the rear skips over the road rather than sliding progressively. Is this just the way it is when youve lowered a car on standard shocks or does this point to an alignment issue?

all input welcome, just want to educate myself as im sure if i go to a dealer they will just blame the springs and be totally unhelpful.

Cant go back to the original fitting garage either as they are friends of mine and after they refitted once already they dont know what else they can do.
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Last edited by Jimbooo; 08-10-2017 at 08:34 AM.. Reason: updated with solution to issue
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      07-11-2017, 06:41 AM   #2
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Perhaps the alignment wasn't done correctly, I'd go to a BMW dealer and have a KDS done to M spec as a first port of call.
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      07-11-2017, 08:57 AM   #3
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Quote:
Originally Posted by Wills2 View Post
Perhaps the alignment wasn't done correctly, I'd go to a BMW dealer and have a KDS done to M spec as a first port of call.
im assuming that wont effect the clunking noises im getting but rather the rear end behaviour?
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      07-11-2017, 10:31 AM   #4
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Quote:
Originally Posted by Jimbooo View Post
im assuming that wont effect the clunking noises im getting but rather the rear end behaviour?
I guess but the rear end might be due to the spring not being in tune with a stock damper that already has rebound issues and gets unsettled on standard springs.

I really want to lower my car but I'm not prepared to just get some inexpensive springs as it will look better but not handle/drive better, so I'm holding out for either the MP HAS or a proper set of coil overs like the ACS RS set up.

A friend specialises in fitting H & R springs to 3/4 series that he buys in tarts up with the MP kit and retails and would put a set on mine for buttons he says they are good springs and doesn't have any issues but I'm not so sure on an M car.

I just need to justify the cost to myself of the coilovers.
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      07-12-2017, 04:03 AM   #5
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Not enjoying reading the problems you have OP �� My M4 Comp is booked in for H&R springs next week. Been debating this the last 6 months. Had a look at Kw's & bmw performance adjustable springs,but in the end settled on the H&R's. Will keep you's updated next week once there fitted. Really hope I don't waste the car as the handling is spot on. Just sitting a bit high.
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      07-12-2017, 04:20 AM   #6
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Quote:
Originally Posted by KERMIT1970 View Post
Not enjoying reading the problems you have OP �� My M4 Comp is booked in for H&R springs next week. Been debating this the last 6 months. Had a look at Kw's & bmw performance adjustable springs,but in the end settled on the H&R's. Will keep you's updated next week once there fitted. Really hope I don't waste the car as the handling is spot on. Just sitting a bit high.
if it helps ive spoken to a few people with exactly the same fitment and they havent had any of these problems (rear hopping or clunking noises) im 90% sure its a fitment or alignment issue so i wouldnt worry unduly.

looks fantastic though so cant complain there
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      07-12-2017, 08:35 AM   #7
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Quote:
Originally Posted by Jimbooo View Post
if it helps ive spoken to a few people with exactly the same fitment and they havent had any of these problems (rear hopping or clunking noises) im 90% sure its a fitment or alignment issue so i wouldnt worry unduly.

looks fantastic though so cant complain there
Hope so Jim 👍 Getting it done at GSR & a few of the forum boys have used in the past,so hopefully he's learned from doing there cars. Time will tell 😃
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      07-12-2017, 06:45 PM   #8
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Quote:
Originally Posted by KERMIT1970 View Post
Quote:
Originally Posted by Jimbooo View Post
if it helps ive spoken to a few people with exactly the same fitment and they havent had any of these problems (rear hopping or clunking noises) im 90% sure its a fitment or alignment issue so i wouldnt worry unduly.

looks fantastic though so cant complain there
Hope so Jim 👍 Getting it done at GSR & a few of the forum boys have used in the past,so hopefully he's learned from doing there cars. Time will tell 😃
I'm sure you will be fine mate. The place I used are friends that I used to work for years ago. Very experienced In general but not to much on f8x. Lesson learned.

Pics for reference. On looks I certainly can't complain
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      07-12-2017, 06:54 PM   #9
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Quote:
Originally Posted by Jimbooo View Post
I'm sure you will be fine mate. The place I used are friends that I used to work for years ago. Very experienced In general but not to much on f8x. Lesson learned.

Pics for reference. On looks I certainly can't complain
Cheers looks great will post up next week.
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      07-13-2017, 07:05 AM   #10
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jimboo,
Maybe worth a watch for you ?, dont know if its any good, just saw the title, so posted on this thread.

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      07-13-2017, 10:53 AM   #11
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jimboo,
Maybe worth a watch for you ?, dont know if its any good, just saw the title, so posted on this thread.

thanks Simon, doesnt really help as thats just the install process but thanks for taking the effort to post lol.

incidentally the clunking goes away in the wet. so I'm leaning towards it being something to do with bushes or something rubber. (based on my zero mechanical knowledge lol)
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      07-13-2017, 02:14 PM   #12
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The stance looks really good! I'm also in the "debating getting springs club" and have been pricing up options, I'm afraid based on your experience I'm going to play it safe and go for ACS! Good luck getting yours sorted though
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      07-14-2017, 08:28 AM   #13
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Quote:
Originally Posted by d4springer View Post
The stance looks really good! I'm also in the "debating getting springs club" and have been pricing up options, I'm afraid based on your experience I'm going to play it safe and go for ACS! Good luck getting yours sorted though
Thanks, yeah looks great. i look the dogs danglies pulling up at a meet until I get close and arrive with a nice clatter/squeak/clunkety clunk ha ha (+1 for the "just leave the damn thing alone" brigade lol)
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      07-18-2017, 12:11 PM   #14
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H&R's fitted today at GSR. What a difference car feels far more planted & stance is exactly what I wanted. No issues so far after a good wee spirited run 30/40 miles.
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      07-18-2017, 03:23 PM   #15
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It's great isn't it .

Colin at GSR is a top man.
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      07-18-2017, 05:25 PM   #16
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He is lovely guy. Can't get my Photobucket to work
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      07-18-2017, 10:53 PM   #17
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Think I'll be paying him a visit shortly too.
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      07-19-2017, 05:42 AM   #18
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Quote:
Originally Posted by KERMIT1970 View Post
H&R's fitted today at GSR. What a difference car feels far more planted & stance is exactly what I wanted. No issues so far after a good wee spirited run 30/40 miles.
How does the arse end feel when hanging fast round tight corners. (Exit of roundabouts etc) are you feeling the skipping rear end like I am or progressive slide like oem?

Also if you got your tracking done would you mind sharing the print off so I can compare.

My clunking is getting worse by the day and need to get it sorted
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      07-19-2017, 02:13 PM   #19
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Car feels absolutely perfect so far Jim. Gave it a spirited run last night & feels a bit stiffer, turn in feels more planted. No skipping or anything like that. Pm your phone number or email. My Photobucket isn't working.
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      07-19-2017, 02:23 PM   #20
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Quote:
Originally Posted by KERMIT1970 View Post
Car feels absolutely perfect so far Jim. Gave it a spirited run last night & feels a bit stiffer, turn in feels more planted. No skipping or anything like that. Pm your phone number or email. My Photobucket isn't working.
Pm sent. Cheers mate
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      07-25-2017, 04:53 AM   #21
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Had H&R's 35mm and Eibacth 12mm spacers all round fitted on Saturday no strange noises car ride good.

Last edited by M4Hulk; 08-20-2017 at 05:35 PM..
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      07-26-2017, 01:27 PM   #22
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Does it sound like it coming from the steering rack?

hhttps://youtu.be/xqhQKL_m2fg

If so, it deffo is your top mount plate bearing. Usually damaged during installation due to over torque and not using BMW specification.

I had a 1000 other issues with my drop but I wont go on about it here, but basically all down to poor installation.

Mine was with ACS springs and I know of at least three other M3 having had identical issues to the above link.

Also would make hideous noises over bumps and when driving slow.
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