Read this tip to make your life smarter, better, faster and wiser. LifeTips is the place to go when you need to know about Car Cleaning and other Cleaning topics.
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.
i personally would never ever use ammonia on my car paint for any reason whatsoever. rubber and tar will come off with water as hot as you can touch, but it may smear in doing so. i use a mix of WD40 to get the worst and thickest off, then i use warm water followed by a regular paste car cleaner, followed immediately by re waxing the affected area. all of this is done with a copious amount of hand and arm muscle.
i think it's dangerous to recommend using ammonia followed by vinegar. you end up with a puddle of a bad liquid, add a little chlorine and you end up with something like "mustard gas" not a good thing or recommendation.