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Discussion Starter · #1 ·
Does anybody know a good way to cover a scrape on the underside of the urethane bumper. It's from "curbing" on a parking barrier - sort of like a skinned knee.

The paint is black so the scrape looks greyish. Since it is on urethane and not metal, the plastic is rough - you can feel fine feathery egdes in thatscratched area. It's not deep, joust roughed up. Simple swirl removing polish won't remove the rough plastic. It seems like it would be less obvious if I could sand off the feather edges of plastic with emory cloth, but I'm afraid that would make it even more obvious. Since it's on black its more obvious. I though about the black polish you can restore rubber trim with, but I think I need to smooth it out first.

I'm sure many others have done this - what's the best way to hide curb rash without getting the bumper repainted??
 

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If you're wanting to do it the cheap way this is what i would do (I've did this on my Z, and will be doing this on my E46 because it has a little "rash" on the side skirts (This is assuming that you are indeed talking about a black plastic part of the car):

1. Clean the area of all wax,dirt,etc.
2. Try to sand down the scratched rough plastic to match as closely as possible with rest of area
3. Get you some flexible bumper paint from auto store (I found some at Pep Boys when i did my Z 4 years ago)
4. Spray as little of the area as possible to cover the area or if the surface is rough you can spray the paint into a rag and blot it on, this will allow you to put on as little as possible. (This depends on the surface, I'm just going from your description).


On a black car I have found the plastic bumper areas are pretty easy to touch up. I used this flexible bumper paint because it seems to be more flexible than regular paint, so it wont crack with movement of the bumper.

This is the $4 fix, but has worked for me in the past and I'll be doing it again on my E46.
 

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That bites. I have the same problem on my silver 330ci. So no black paint for me. Dealer quote $400CDN to repaint it. It's impossible to see unless you get under the car, but it bugs me to know it's there!
 

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Discussion Starter · #5 ·
Yes it is the plastic part of the bumper - on the underside. You can't see it unless you get down in front of the car so it's hard to justify hundreds for paint, especially knowing it could happen again after you have it painted.

I'm afraid using sand paper will dull everything. Since this is plastic, I'm thinkking about trying steel wool to smooth it out then use black vinyl/rubber dressing to see what happens. That seems more forgiving than sandpaper and paint. The last thing I want to do is spend $4 trying to break cheap and only make it worse!!!
 

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after you fix it you should try stongurd

i had that happen to me 3 times since nov. when i got my baby.
a 2003m3. went back to stongurd auth. dealer. he cut the piece off car did not get any of the rash on my car. the stongurd took the hit. he cut out the piece and gave me another area to fill it in.he was so nice he felt bad about matching the piece to the existingarea. believe me you can not even see it you just see a light seem .

the stonegurd was the best ins. i ever spent i got my front section done like a normal bra. and my back bumber done and both sides half way up from the bottom. and a sec. for where my doors open. so if i hit anything it wont scratch. and my mirrors and fog lights and head lights. i got 2/3 almost of my car done. it was expense but i fig it was worth it. the cost for the front bra was 875.00. but if it yellows or rips or as a rash they put another pice on for nothing. o if your car gets chip the co. will give you 2,000.00 to paint your car. but you have to go to their auth dealer. in the new york area they is only one place. it is in edison new jersey.very nice guys. you can call the co.up i mean stongurd and they tell you the closest auth dealer is to your house.

and the rest of my stongurd cost me 575.00 more for almost 2/3
of my m3 it cost with tax 1500.00

( fig it was a good investment MOD )
BOBM3 :thumbup: :thumbup:
 
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