SILCA spent years chasing the perfect tire pressure before landing on the one variable pressure alone couldn't fix, and the Protocol RCG-1 tire is that answer for gravel courses with real pavement mileage. Its low-profile tread holds rolling speed where a taller gravel knob starts to drag, and tubeless construction pairs with modern wide rim widths for lower pressure without pinch-flat risk. What Our Gearhead(R) Experts Are Saying:"I run the RCG-1 on courses that spend real miles on pavement, since a slower, knobbier gravel tread costs speed the moment the surface goes smooth."