Untreatable Black/Grey Spots on my White 35i- Need Help

[suvidh]

Pictures below for the Black / grey spots i have all over the rear bumper, side skirts , probably from the road tar from the long road trip.

The tar which was on the surface was treated by the local detailer, however these spots are residual of the tar / or something else , not sure. But they appear as if they have been absorbed inside the paint are untreatable. The surface feels smooth over these spots.

The detailer has tried removing the spots with gasoline, diesel, compound, other type of polishes/chemicals - however nothing is helping to lighten or remove the spots

Anyone has any idea what these spots are and how to remove them? They look Ugly

[jannisa]

Try first a tar remover, autoglym works fine for me and help it with your nails, this is the hardest you can get on the coat and then apply the finishing compound and the wax you use. Obviously these are not chips. If this won't do the job - which I doubt - then I 'm afraid you are up to wet sanding with 2000 or 3000 sandpaper and then polishing with the appropriate tool. If you don't have a polisher you should attend a detailer.
Good luck.

[Silver-Bolt]

I use Turtle Wax Bug & Tar remover. Spray it on and let it sit for 20-30 minutes. Wipe clean with a soft cloth. Then hit it with a clay bar. If a coarse clay bar won't take it off then you are looking at a wet sand and buff. The problem with that is the factory clear is so thin it is very easy to cut through the clear which means a repaint.

[Chuck76]

have you tried with meguiars spray and clay?

[cdeslandes]

Originally Posted by Chuck76

have you tried with meguiars spray and clay?

I second that. Clay bar is your friend. Works great on the front bumper too (all those dead bugs! )

[suvidh]

Originally Posted by Silver-Bolt

I use Turtle Wax Bug & Tar remover. Spray it on and let it sit for 20-30 minutes. Wipe clean with a soft cloth. Then hit it with a clay bar. If a coarse clay bar won't take it off then you are looking at a wet sand and buff. The problem with that is the factory clear is so thin it is very easy to cut through the clear which means a repaint.

The detailer did the wet sand and buff , nothing else worked. Most of the spots from the rear bumper are gone, however i got one very small area of damage to the paint, think will have to live with that. polished after that.

[tranquility]

I 2nd using a wax to rub on it (assuming it is a surface mark and not inside the paint). I had something similar and turtle wax got it off.

[msimon18]

I have seen something similar once in my lifetime. That issue occurred due to a the temperasture of the tar coming off of freshly paved tarmac when the temperature was in upper 90's. Driving over it seems to release an almost liquid compound that aseems to burn itself into the aint. It seems that the tar at that temoperature sitting on the paint (especially the thin clear coat) can permanently damage it.

We never did get it off completely...... Good Luck !!!!

[Chuck76]

wow, had to wet sand and buff. never experienced that before on my car. sorry to hear that, but at least it sounds you got it partially if not all resolved.

[SCBMW02]

I use 3M Hand Glaze, really good for most sticky things in my experience

[siscobmw]

clay bar and good wax will resolve....also teflon wax from swizol.com will prevent tar spots.....
Francesco

[suvidh]

Originally Posted by msimon18

I have seen something similar once in my lifetime. That issue occurred due to a the temperasture of the tar coming off of freshly paved tarmac when the temperature was in upper 90's. Driving over it seems to release an almost liquid compound that aseems to burn itself into the aint. It seems that the tar at that temoperature sitting on the paint (especially the thin clear coat) can permanently damage it.

We never did get it off completely...... Good Luck !!!!

I have been brainstorming to find out where the spots may have come from and how are they are inside the clear coat and no explanation came this close.

I think this is 99.9% the explanation why this could have happened. Travelled through areas with temprature above 45 degree C. And road works was on at some of these areas.

[riccis]

I have the exact same issue on my white Audi. The little spots seem rock solid and tar remover did nothing to soften or remove them. On my car they the spots stand proud from the varnish/paint so you can easily feel them when you run your hand or finger over them. Even have them on the roof of the car!

Admittedly I haven't tried clay baring the car but so far, all other methods have failed. I too believe it's from the road but it doesn't seem like conventional tar though I won't dismiss the idea that it's some liquid from the tar itself.

[msimon18]

suvidh,

Glad I could help shine some light on the issue but sorry it occurred.... Hope you have better luck than I did back then... I think that issue is why I now always buy BLACK cars !!!!

[Mr. ///M3 RD]

As others recommend use a car clay (a good one) gentle rubs with recommended solution you get with the car clay will take it off. I've also used tar remover, however, on a red car and a dark gray one. Never on a white one.

It is a fairly simple procedure. Stay off new paved tar roads if you can on hot days then you properly knew this, just saying.

[Projekt35i]

Try mothers clay bar. It works like magic