Tar

[Bigclive]

Scrape away as much tar as you can,wet a cloth with lighter fluid, (or petrol), and lightly rub the offending area.obviously , preferably doing this in the garage or outdoors because of the fumes.No smoking or naked lights.

This also works with anti-vandal paint and bitumen.

 

[Steven]

Or you could just buy a replacement of the clothing


Also i think the solutions will only work on certain types of clothes others it may ruin