To remove rubber from spinning tires off of the paint on your car there are a few things you can try: 1) Try mixing equal parts of ammonia and warm water and scrub with a sponge. 2) Try rinsing your car with white vinegar, using a solution of 3 parts soft water to 1 part white vinegar, increasing the vinegar content as needed. 3) Try Goo Be Gone, Goof Off or WD40. Spray the product on the stain, rub, and rinse well. You could also try mayonnaise in a similar fashion.