Size TPI Bead Max Psi Durometer Weight (g) 20X11/8 60 WIRE 85 70 245 20X13/8 60 WIRE 65 70 330 20X1.75 60 WIRE 60 70 425 20X1.95 60 WIRE 60 70 510 20X2.20 60 WIRE 60 70 575 24X1.75 60 WIRE 60 70 600 24X1.85 60 WIRE 60 70 620