i was slowing backing out of my driveway and my moms car was in the way but i still tried to squeeze through it . i went really really slow but i heared a sqeeking sound. it left a small black line right above the tire. the line seems to come from rubbing against my moms tire. well i cleaned it off with bug tar remover and the more i rubbed it with a mf towel the line line got bigger and bigger so i stopped. anyone know why this is happening or what i should do?

 

you sure its not because the black stuff is spreading and its not actual damage to your paint? coz i occasionally get those grease spots and i use the special cleaning compound on it and it goes away (but since thats not a U.S. product i just switched to claybar) anyway, a picture of it would probably help

 

if you rubbed on the tire and have a black mark it is most likely rubber-
if its not easily coming off, try claying the area.

agree that pics would help us out a lot