Schwalbe racing ralph evo mtb tyrereal racers always want to improve by getting better and faster result we radically revised racing ralph for the second time with pacestar compound and a completely modified profile also the hard numbers show how ambitious we were racing features size26 x 210 etrto54 559 compoundpacestar bar2 0 4 0 psi30 55 weight465g epi67 load140kg size26 x 225 etrto57 559 compoundpacestar bar1 8 3 7 psi26 54 weight525g epi67 load145kg