TURN's VEC racing is a form of racing which is meant to test the durability of equipment and endurance of participants. Teams of multiple drivers attempt to cover a large distance in a single event, with participants given a break with the ability to change in between stints.
Im not sure if T10 is even aware of lots of things. Like tire wear. It's not simulated at all. You get percents but even with 80% nothing is worse. Like they rushed it for FM5 and forgot they never ever actually implemented it. Worked just fine on FM2-FM4.