24"x1-3/8" (37-540) Solid Urethane Orion Wheelchair Tire with P163 Street Tread (Primo) Color:Black and the automatic shut off

and the automatic shut off indicates when charging is complete

Silica compound features a special silica filler in the rubber mixture that positively influences the rolling resistance

Panaracer: AW738-LX-18

but they pack almost a quarter more power capacity

The Gen3 is the same PC board as the Gen2 but without the speed dial

24"x1-3/8" (37-540) Solid Urethane Orion Wheelchair Tire with P163 Street Tread (Primo) Color:Black and the automatic shut offThese 24"x1 3 8" (37 540) solid urethane Orion wheelchair tires from Primo fits many manual wheelchairs models. The non marking black or gray urethane construction means flat free, worry free performance. The P163 surface gripping street tread means superior traction. If your wheelchair uses the 24"x1 3 8" (37 540) tire size, then this may be the one you want.