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M3PSM 
Really Senior Member I
Joined: 27-May-2003
Location: Tropical Essex
Status: Offline
Points: 451
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 Topic: Rear arch rubbing when loaded
Posted: 05-October-2005 at 07:29 |
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I don't very often drive my M3 four-up, but on a recent trip to Cheshire with four adults & the sprog I developed a new problem.
Every time I accelerated the offside rear wheel rubbed on the arch slightly.
It never rubbed thougth over any bumps.
When I checked it, it appears the rear arch is rusting & has bubbled out by about 3-4mm on the inside.
Could this bubbling be enough to cause the rubbing? Is the tollerance that tight?
It doesn't do it when I'm only 1 or 2 up.
Any advice?
Cheers
Paul
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Drive it like you stole it!
___________________________
1995 3.0 E36 Coupe
1989 E30 325 Touring
1992 Yamaha TDM 850
www.myallracing.co.uk
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Robbie Bradford
Really Senior Member II
Joined: 16-July-2004
Location: Co. Laois, Ireland.
Status: Offline
Points: 2124
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Posted: 05-October-2005 at 08:15 |
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I'd say space between sidewall and arch is pretty little when the car is fully laden. Don't understand why it's not rubbing on speed ramps though, i would have thought this would magnify the rubbing. Maybe one side of the car was heavier? worn damper? but i'd imagine the rust is causing the problem. I've just recently had both rear arches done to get rid of the rust on my 3.0 coup.
Edited by Robbie Bradford
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M3PSM
Really Senior Member I
Joined: 27-May-2003
Location: Tropical Essex
Status: Offline
Points: 451
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Posted: 05-October-2005 at 09:06 |
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One side was heavier as I had baby seat on one side & it was the heavier side that rubbed.
All of the suspension is new 3 months ago with geniune parts so it sounds like it must be down to tight tollerances.
Out of interest, how much did you pay to have your arches done as mine is also a 3.0 coupe?
Cheers
Paul
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Drive it like you stole it!
___________________________
1995 3.0 E36 Coupe
1989 E30 325 Touring
1992 Yamaha TDM 850
www.myallracing.co.uk
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Robbie Bradford
Really Senior Member II
Joined: 16-July-2004
Location: Co. Laois, Ireland.
Status: Offline
Points: 2124
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Posted: 05-October-2005 at 09:24 |
Cost me around €600 incl. front bumber respray, so not sure of the break down, i'm in Ireland, so probably not much of a help!
I'm sure it's just the fact that the car was loaded which caused the rubbing, as you should'nt have suspension issues after fitting new.
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micky_h
Really Senior Member II
Joined: 17-February-2003
Location: United Kingdom
Status: Offline
Points: 798
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Posted: 05-October-2005 at 10:43 |
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Cost me 80 quid to have both of my rear arches done, caught it really early so it wasnt too bad to sort out.That was done by my local friendly bodyshop man and not BMW dealer.
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M3PSM
Really Senior Member I
Joined: 27-May-2003
Location: Tropical Essex
Status: Offline
Points: 451
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Posted: 05-October-2005 at 10:51 |
Cheers guys.
Think I'll wait until spring, then get both arches & the front end (stonecatcher) done together.
Looks like I'll be using the wife's car for fully laiden trips in the meantime & have to keep mine for fun driving only - shame 
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Drive it like you stole it!
___________________________
1995 3.0 E36 Coupe
1989 E30 325 Touring
1992 Yamaha TDM 850
www.myallracing.co.uk
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PikeyM3
Really Senior Member I
E30 M3
Joined: 31-May-2003
Location: Cheltenham - Uk
Status: Offline
Points: 438
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Posted: 06-October-2005 at 13:41 |
As to why its only rubbing on the right hand side, the fuel tank is on the right hand side at the back of the car, hence more weight and rubbing on that side.
Pikey
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Old enough to know better, too young to care!
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Demlotcrew
Groupie
Joined: 30-August-2005
Status: Offline
Points: 64
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Posted: 06-October-2005 at 17:06 |
 PikeyM3 wrote:
As to why its only rubbing on the right hand side, the fuel tank is on the right hand side at the back of the car, hence more weight and rubbing on that side.
Pikey
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The Exhaust is on the other.
Andrew
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email: Andrew AT E30zone.co.uk | 323is | S14 ™
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M3PSM
Really Senior Member I
Joined: 27-May-2003
Location: Tropical Essex
Status: Offline
Points: 451
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Posted: 07-October-2005 at 04:18 |
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Cheers guys.
It was the fuel filler side that rubbed & the car was fuelled up.
Looks like someone else can drive next time.
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Drive it like you stole it!
___________________________
1995 3.0 E36 Coupe
1989 E30 325 Touring
1992 Yamaha TDM 850
www.myallracing.co.uk
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PikeyM3
Really Senior Member I
E30 M3
Joined: 31-May-2003
Location: Cheltenham - Uk
Status: Offline
Points: 438
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Posted: 08-October-2005 at 11:58 |
Funny how they thought of putting the tank over to the right. You would have thought to get the 50/50 weight distrbution the tank would need to be in the middle?
Pikey
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Old enough to know better, too young to care!
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Rear arch rubbing when loaded