The Hi-Run Stud 4.10/3.50-4 4PR tubeless tire comes pre-mounted on a compact 4x2.5-inch steel wheel—built for tiny folding wheelbarrows and balcony garden carts that always get stuck on wet concrete, gravel, or muddy patios. The aggressive stud blocks with deep grooves bite hard so your mini cart never spins or slides when loaded with soil, bricks, or trash bags—even on slick slopes. At only 300 lb rating and 30 psi, it stays light enough for apartment storage while giving monster traction no smooth tire can match. Bolt it on and stop wrestling your little cart across the yard.