This is the Team Losi 1/8 Mounted XTT Tire Blue w/Yellow Wheel (2)

Overview:
The act of tire gluing has long been regarded as a black art of the RC world, and nothing is more embarrassing than your tire flying off on the white flag lap.

Losi’s 1/8th scale Truggy XTT Tires (LOSA7780B) are mounted and glued to Yellow (LOSA17780B) racing wheels. These tires include foam inserts and have been developed specifically for the rigors of off-road racing.