krazykarl

Over a summer of autocrossing my 944S2 I have gotten quite a few cone marks on the stone guards of my S2 that do not seem to want to come off. Does anyone have any suggestions for removing the offending marks? Regular washing and detail spray is not doing the trick. Thanks.

Mussl Kar

Black cone marks can be removed from a claer bra with a product called Goof Off. It can be found in the paint department of Home Desperate. Test in a hidden area first, I have not had any problems with it. 3M rubbing compound takes the marks off the wheels.

Scootin159

I've always had good luck with just giving those areas a quick squirt of simple green before I wash the car normally.

ATL986

I tend to keep the cone marks off of my car by not hitting them in the first place.

(sorry, I just had to)

Scootin159

Clearly you're just not getting close enough to them...

sjfehr

^^^ +1. If you're not hitting cones, you're either not driving fast enough, or driving too far from the cones! As a general rule of thumb, every foot that you're off a key cone is worth about 0.2s. It's painful to watch a Porsche get babied around an autocross course... Doesn't sound like this is the case for ATL986, but still

Mr. Clean magic eraser does wonders for cone marks, they come off with very little effort, even off my clear bra. (Does great on wheels, too.) You'll have to rewax afterwards, though.

krazykarl

I used goof off on a small spot and while it did remove the mark, it also took the shine off the stone guard material. I do have some faint marks to get off the paint as well, but they should come off during a good detail job.

00r101

I've been using Xenit by Stoner (the folks that make Invisible Glass). It works great on cone marks on painted surfaces but has a tougher time with clear bra material. What happens when the cone hits the plastic at speed is the cone plastic and the clear bra plastic actually melt into eachother. So what I do is a two step process:
1) Use Xenit and a rag and get as much of the non-melt parts of the mark off as possible.
2) Get out my trusty buffer and buff with a little Blue Coral Metal polish - I know that sounds really harsh but its just plastic not paint. So far I have not ruined the clear bra but if I do I can always remove it and have perfect paint underneath.

sjfehr

Seriously, try Mr. Clean magic eraser, it takes cone marks right out of clearbra with very little effort. There's no visible difference from straight-on, but the sheen is a bit different when you look at an angle; wax it, though, and you can't tell anything ever happened. The food lion generic brand works just as well, too.

cdmdriver

I had the same issue on my 993. I tried everything. The only thing that worked was to use a light paint cleaning compound, buff it on (don't be afraid to use an orbital buffer) and wipe off. If you see improvement but the mark is still there, do it again until it is gone. Follow up with a polish /glaze and then wax.

kpl

Another vote for Simple Green. Spray it on, let it sit a few minutes, rub it around, and rince. When they are good and clean, and dry, put some tire protectant on them. That makes them easier to clean in the future.