480/4.00-8 (16x4) Carefree Pneumatic HD Tire With Inner Tube
3.50 / 4.00 - 8 TYRE AND INNER TUBE, WHEELBARROW FITS 14" WHEEL / WHEELS | eBay
Amazon.com: (2-Pack) 3.50/4.00-6 Inner Tube Heavy Duty TR13 Straight Valve Stem Replacement for Hand Truck, Wheelbarrow, Lawn Mower Utility Cart Garden Wagon Scooter Pocket Bike Go Kart : Automotive
AFIKIM Afiscooter S & C Inner Tube (4.10*3.50-6 90) - Tax-Free & Free Shipping | Mobility Direct
Marathon Universal Fit Pneumatic (Air-Filled) 14.5-inch Tire and Wheel Assembly, Replacement for 4.80/4-8; 4-8; 4.80-8; 4-6; 3.50-8, Wheelbarrow/Cart Use, Castle Tread in the Wheels & Tires department at Lowes.com
2 Pcs 4.10/3.50-4 410/350-4 Atv Go Kart 47cc 49cc Chunky 4.10-4 Tire Inner Tube Fit All Models 3.50 | Fruugo NO
3.50 / 4.00 - 8 TYRE AND INNERTUBE FOR WHEELBARROW WHEEL / TROLLEY WHEELS - 14" | eBay