I was playing the Endurance event: El Capitan 200 miles with Chevy Camaro LM Race Car. After a pit stop to renew the rear tires with Economy Tires, I did several laps with it. When the tires reached the conditions of a bright green (with no sign of yellow) they stayed in that condition for about 6-10 laps.I mean like ABSOLOUTELY no change. Is this some sort of bug? 