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NZ_M3 · 16-12-2008, 04:16 AM

Some are like that .... it's an imperfection in the carbon fibre bumper (some are better than others) ... if you take the bumper off and lay it upside down on a flat ground you'll realise that the right hand side (driver side) is not entirely straight.

Mine is like that and I know how to adjust the CSL bumpers properly - not only via those white plastic side hangers, but also through the chassis rail shocks.

Sometimes if the central chassis rail shocks are adjusted too high you'll also get the driver side gap being a little bit larger than the passenger side.

Another way is to take those white hangers off and enlarge the adjustment holes to give you a larger adjustment range - doesn't always work either given how rigid the CSL bumper is.

Another way is to actually adjust the driver's side fender - there's a 10mm bolt on the bottom (if you look up) and loosening that bolt can help to bring the fender down by about a 1mm or so)

Trust me on this one ... I must have taken my CSL bumper off like over 100 times now trying to get that extra 1mm adjustment out of it. Then I finally realised that it was actually an imperfection in the bumper.

Alternatively you could get the body shop to build up a little bit of material on that edge ... but in my opinion, not worth it.

Just live with it, it's not that big of a deal. (the technical tolerance is 5mm+/-2mm) anyway and I've measured mine numerous times ... passenger side 5mm ... driver side 6mm ...

p.s. don't get me started on the rear bumper ... there's quite a few adjustments on the rear to make it line up perfect ... it can be done.

16-12-2008, 04:16 AM	#2
NZ_M3 S5, Sport On, DSC M-track Join Date: Jun 2008 Location: Auckland, New Zealand Posts: 1,434 Casino cash: $13579	Some are like that .... it's an imperfection in the carbon fibre bumper (some are better than others) ... if you take the bumper off and lay it upside down on a flat ground you'll realise that the right hand side (driver side) is not entirely straight. Mine is like that and I know how to adjust the CSL bumpers properly - not only via those white plastic side hangers, but also through the chassis rail shocks. Sometimes if the central chassis rail shocks are adjusted too high you'll also get the driver side gap being a little bit larger than the passenger side. Another way is to take those white hangers off and enlarge the adjustment holes to give you a larger adjustment range - doesn't always work either given how rigid the CSL bumper is. Another way is to actually adjust the driver's side fender - there's a 10mm bolt on the bottom (if you look up) and loosening that bolt can help to bring the fender down by about a 1mm or so) Trust me on this one ... I must have taken my CSL bumper off like over 100 times now trying to get that extra 1mm adjustment out of it. Then I finally realised that it was actually an imperfection in the bumper. Alternatively you could get the body shop to build up a little bit of material on that edge ... but in my opinion, not worth it. Just live with it, it's not that big of a deal. (the technical tolerance is 5mm+/-2mm) anyway and I've measured mine numerous times ... passenger side 5mm ... driver side 6mm ... p.s. don't get me started on the rear bumper ... there's quite a few adjustments on the rear to make it line up perfect ... it can be done.