GREENSPEED TYRE ROLLING RESISTANCE TESTING 6/1/2006
4.5" drum, 30 kg load, 30 kph
PSI	20	40	60	80	100
Tyre	Comp Pool, 20" x 1.75", 90 psi rating  with 18" x 1 3/8" tube
Watts		24.6	20.0	16.9	16.0
Tyre	Primo Comet, Kevlar Belt, 20 x 1.50, 100psi, 18" x 1 3/8" tube
Watts		24.5	20.7	17.9	17.1
Tyre	Schwalbe Marthon Slick, 35-406, 95 psi with 18" x 1 3/8" tube
Watts		28.4	22.1	19.0	17.1
Tyre	Schwalbe Marathon, 40-406, 45-100psi, with 18" x 1 3/8" tube
Watts		37.0	31.0	27.8	20.4
Tyre	Maxxis Horkworm, 20x1.95, 20x1.50/1.75 Tube, 110 psi
Watts		42.5	34.4	32.2	27.8
Tyre	Maxxis Maxy Daddy, 20 x 2.25, 20x1.50/1.75 Tube, 40 psi
Watts	61.4	46.2
Tyre	Greenspeed Scorcher, 40-406, 20x1.50/1.75 Tube, 40-100psi
Watts		22.6	17.9	14.8	12.9
Tyre	Greenspeed Scorcher TR, 40-406, 20x1.50/1.75 Tube, 40-100psi
Watts		25.7	20.1	17.1	15.7