My boyfriend rides a Yamaha dirt bike, and after he rides (regardless of which track he is on) the tires have a blue tint to them. Anyone know why? He asked me, and so help me look smarter than he is! 
Exhaust from the dirt bikes exits and the heavier partials, unburned oil partials, fall into the dirt. The rubber tires have a reaction with the oil making them slightly blue. So the answer is the oil in the dirt.
Ask a question or leave a reply