AR-PRO 12x5.00-6 Tire & Inner Tube Set for Razor Dirt Quad 19+ — Knobby 2-Ply, Bent TR87 Valves (Set of 2)

AR-PRO 12x5.00-6 tire and inner tube set — a direct-fit replacement for Razor Dirt Quad versions 19+ and many go-karts, mowers, and utility carts.

If you need reliable, knobby tires and heavy-duty inner tubes that match Razor part W25143002070, this AR-PRO pair delivers a true-size swap: 12" outer diameter, 5" width, 6" rim diameter, and a 242 lb per-tire load rating. These units are built from new butyl rubber with 2-ply construction and come with angled metal TR87 valve stems for easier inflation. They’re designed for off-road traction and everyday utility use on a variety of small vehicles and equipment.

Will these tires fit my Razor Dirt Quad?

These 12x5.00-6 tires fit Razor Dirt Quad model versions 19 and newer. Older Razor Dirt Quad versions 1–18 use 13" tires, so confirm the model version on your barcode sticker to be sure.

• Exact replacement for Razor part number W25143002070
• Model version is the 7th and 8th digits under the barcode
• Barcode sticker locations: underside, charger, steering tube, or original box

What construction and features do the tires and tubes have?

The tires are molded from new isobutylene isoprene (butyl) rubber with a knobby 2-ply design for improved grip and wear resistance. Inner tubes are heavy-duty, airtight, and tear-resistant, fitted with angled TR87 metal valve stems for convenient inflation and durability.

• New rubber (not recapped) with knobby tread for traction
• 2-ply construction for better elastic damping and durability
• Bent metal TR87 valve stems for easier pump access
• Designed to resist heat, aging, punctures, and chunking

Which other machines and tasks will these tires work for?

Beyond Razor Dirt Quad 19+, these 12-inch tires suit many small off-road and utility applications. Common uses include go-karts, mini buggies, small lawn tractors, trailers, wheelbarrows, hand trucks, and other garden or utility equipment that accept 6" rims.

• Compatible with many go-karts, dune buggies, and mini bikes
• Good for lawn and garden gear: mowers, yard trailers, wheelbarrows
• Fits hand trucks, trolleys, and small utility carts that use 6" rims
• Each tire rated to carry up to 242 lbs

How do I install and maintain these tires and tubes?

Install the inner tube with the bent valve stem facing outward toward the rim cutout to allow easy inflation. Inflate to the manufacturer's recommended pressure, check for even seating, and periodically inspect tread and tube for punctures or wear.

• Seat tire bead evenly on the rim before inflating
• Position TR87 valve stem through the rim opening for access
• Maintain recommended air pressure and inspect for damage
• Replace tubes and tires if chunking, deep cuts, or severe wear appear

Who this is for: Riders, hobbyists, and homeowners who need a dependable, exact-fit replacement for small off-road vehicles and utility equipment. Choose this AR-PRO set if you want new butyl rubber tires with knobby tread and heavy-duty inner tubes that simplify inflation and withstand regular outdoor use. Whether repairing a Razor Dirt Quad 19+, outfitting a go-kart, or refreshing garden equipment, this pair provides an economical, durable solution that matches OEM sizing and improves serviceability.