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Poll: Mushrooming/strut mount failure data collection

Stock Problems/Issues Discussions related to warranty related issues and repairs, or other problems with the OEM parts and software for MINI Cooper (R50), Cabrio (R52), and Cooper S (R53) MINIs.
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View Poll Results: If you had mushrooming or a cracked strut mount please vote
mushrooming: stock suspension / 15" non-runflat tires
28
2.73%
mushrooming: stock suspension / 16" runflat tires
82
8.00%
mushrooming: stock suspension / 16" non-runflat tires
61
5.95%
mushrooming: stock suspension / 17" runflat tires
336
32.78%
mushrooming: stock suspension / 17" non-runflat tires
204
19.90%
mushrooming: stock suspension / 18" runflat tires
22
2.15%
mushrooming: stock suspension / 18" non-runflat tires
24
2.34%
mushrooming: lowering springs / 15" non-runflat tires
2
0.20%
mushrooming: lowering springs / 16" runflat tires
7
0.68%
mushrooming: lowering springs / 16" non-runflat tires
14
1.37%
mushrooming: lowering springs / 17" runflat tires
31
3.02%
mushrooming: lowering springs / 17" non-runflat tires
56
5.46%
mushrooming: lowering springs / 18" runflat tires
4
0.39%
mushrooming: lowering springs / 18" non-runflat tires
18
1.76%
cracked strut mount: stock suspension / 15" non-runflat tires
21
2.05%
cracked strut mount: stock suspension / 16" runflat tires
33
3.22%
cracked strut mount: stock suspension / 16" non-runflat tires
27
2.63%
cracked strut mount: stock suspension / 17" runflat tires
111
10.83%
cracked strut mount: stock suspension / 17" non-runflat tires
71
6.93%
cracked strut mount: stock suspension / 18" runflat tires
6
0.59%
cracked strut mount: stock suspension / 18" non-runflat tires
14
1.37%
cracked strut mount: lowering springs / 15" non-runflat tires
3
0.29%
cracked strut mount: lowering springs / 16" runflat tires
6
0.59%
cracked strut mount: lowering springs / 16" non-runflat tires
11
1.07%
cracked strut mount: lowering springs / 17" runflat tires
11
1.07%
cracked strut mount: lowering springs / 17" non-runflat tires
25
2.44%
cracked strut mount: lowering springs / 18" runflat tires
5
0.49%
cracked strut mount: lowering springs / 18" non-runflat tires
8
0.78%
Multiple Choice Poll. Voters: 1025. You may not vote on this poll

Poll: Mushrooming/strut mount failure data collection

  #626  
Old 06-09-2018, 02:54 PM
OCR
OCR is offline
4th Gear
Join Date: Mar 2018
Location: SoCal
Posts: 325
Received 32 Likes on 31 Posts
MG -

While a stiff, FULL coverage, "upper" (on the top of the housing) plate may provide "some" amount of protection...the BEST protection from mushrooming will be from the underside. You pick your poison.
This is purely from an Engineering standpoint.

Mike
 
  #627  
Old 07-31-2018, 05:58 PM
hemisedan
hemisedan is offline
6th Gear
Join Date: Aug 2009
Location: Des Moines, Iowa
Posts: 1,540
Likes: 0
Received 1 Like on 1 Post
Just purchased an 05 JCW dealer installed drive train. The shock towers loo good, it has 17" White wheels, it is British Racing green with a white roof, mirrors and wheels. Not hot on the wheels. Anyway, I have ordered a strut tower brace, mainly to be on the safe side. I feel that I am lucky with this car, an 05 with 63k on the clock and no mushrooming. My wife said she liked the looks of the Generation 1, and in BRG, only, so here I am. One of the things that I looked for was the mushrooming of the towers, and like I said, got lucky.
 
  #628  
Old 08-21-2018, 01:11 PM
Mereco
Mereco is offline
2nd Gear
Join Date: Nov 2015
Posts: 106
Received 8 Likes on 7 Posts
Ive had the Ireland fixed plates , its a trade off cause it does raise the height of the suspension
 
  #629  
Old 10-28-2018, 04:09 PM
ptkacik
ptkacik is offline
2nd Gear
Join Date: Jul 2013
Location: Charlotte, NC
Posts: 91
Likes: 0
Received 2 Likes on 2 Posts
There are two problems that are related but different. The first is the rubber bushing failing at the top of the strut. I think this is related to misalignment of the strut and tower causing a twisting in the bushing that over stresses it on jounce of the suspension. I've replaced both of the rubber bushings on my daughters '05 Mini Cooper.

The second failure is the doming of the overly flat shock tower due to stress. Why it was designed so flat is beyond me but under heavy loads, it gets pounded upwards and then domes the shock tower.

I pounded mine flat and purchased and installed some Madness Motor plates. These help flatten the tower tops and being a quarter inch thick (6mm), should prevent further doming. However, the center hole is too small, maybe only 1.5" diameter and the strut nut washer scrapes loudly on it when steering sharply. I'm going to have to pull the struts down, remove the plates, open up the hole with a die grinder, and reinstall them. A poor design if you ask me.

regards,
Peter
 
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