Product Description (9 x 3.50-4) 1 STANDARD FOAM FILLED GRAY TIRE FOR 2 PIECE WHEEL. 9 X 3.30-4 ( 8 1/2 X 3 1/2") STANDARD FOAM FILLED TIRE FOR 2 PIECE WHEELS. FITS MOST. KNOBBY TIRE, TREAD PATTERN C203, BEAD TO BEAD WIDTH 2.30. FLAT FREE, STANDARD FILL, SOFTER RIDING. MAXIMUM RIDER WEIGHT 300 LBS. FITS HOVEROUND Front Drive Tires, Rear/Front Tires On Scooters And Others, OEM Style. FLAT FREE, STANDARD FILL, SOFTER RIDING. MAXIMUM RIDER WEIGHT 300 LBS. This Listing Is For 1 Tire Tires And Wheels Available For Other Makes And Models For Other Brands, Send Us The Make/Model Of Your Power Chair/Scooter. Contact Us For Free Advice With Help Mounting Tire On Rim. When replacing pneumatic(air) tire with solid, make sure to let air out of tube before loosening the lug bolts that separate the rim.