TT tyre that still has the nobbles on it from the tyre mold.
bought so many TT tyres over the years, I can't remember using it but has a bit of dirt on it so many used a few times at a guess.
Michelin Pro4 Service Course is a high-performance clincher designed for a balance of speed, cornering grip, and respectable puncture protection for a race-class tyre. It is often described as a "well-balanced" option for cyclists who want a fast ride without the extreme fragility of pure time-trial rubber