Seriously guys, just use a more powerful pressure washer. I've had similar problems on my drive and the rotary nozzle cleans it right off. I did not have any concrete removal problems with the nozzle @ 6"-1' away from the surface but common sense dictates that you try an unobtrusive spot 1st. You should be able to dial back the pressure if it's too powerful.
Be sure to wear heavy duty boots & eyewear! The red and/or rotary nozzle with cut right through tennis shoes.
You might give this a try.
Several years ago I accidentally knocked over a can of the purple PVC primer on a concrete sidewalk. After wiping up what I could, I decided to use good old Clorox bleach. A couple doses of straight bleach and the stain was gone with no detectable damage to the concrete.
This may or may not work on your tire tracks, but give it a try. A gallon of bleach is cheaper than renting a power cleaner.
Best Regards, Ken
You could try laundry detergent. It works on the skid marks in my undershorts! LOL
Acid won't have any effect on the rubber, but it LOVES to eat concrete.. I'd opt for the pressure washer, and a little self control..
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Try oven cleaner that is how they lift rubber tracks from accidents off of the street.
Craig Matheny
Anaheim, Ca
45 watt Epilog Laser, 60 watt Epilog Laser,
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Universal Repair Kit (1- Hammer and 1- Roll of Duck Tape)
Tear the concrete out, replace it, then charge the idiot.
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