What Our Gearhead(R) Experts Are Saying:"I run the GravelKing SS R on race days and fast-paced group rides when I want the low rolling resistance of a semi-slick but can't risk losing grip in corners. The center tread flies on hardpack, while the shoulder knobs keep things controlled in loose turns. It mounts up tubeless with a floor pump, even on hookless rims-huge plus."On race day or fast gravel missions, we reach for the Panaracer GravelKing SS R Tire to give us that razor-sharp edge. Designed for mixed terrain where rolling speed matters, this semi-slick tire blends efficiency with just enough bite to corner confidently when the gravel gets sketchy. Panaracer pairs its featherweight TuffTex R casing with the Zero Slip Grip (ZSG) Gravel Compound to keep rolling resistance low and traction high across changing temps and conditions. The BeadLock design makes tubeless setup easy on both hookless and clincher rims. With sizes ranging from 700x30 to 700x45, we can match the tire to our terrain and riding style-no compromises, just speed.