Like spoonwacker said, rally tires are very, very durable. Sidewalls are very stiff and thick. I took one of my sets to get dismounted in favor of snow tires for the winter, and neither Walmart nor Discount Tire were able to get them off the rims. A local ma and pa shop had no problem.
One thing of note, they turn to hockey pucks in the cold, snow, and ice and become absolutely worthless.