1 - 18x9.50-8 Knobby tyre fitted to heavy duty 4 stud 4 inch PCD steel rim. These wheels can be used for ride on lawn mowers, garden trailers, ATV quad trailers, buggys, karts, small agricultural machinery. This type of knobby stud pattern is very versatile, it is a flotation tyre so it causes minimal disturbance to the ground & it leaves very little track pattern on the ground. This tyre also absorbs a lot of the bumps & uneven surface to give a smooth ride. These wheels are not for highway service - They are for off road applications. The tyres are "Wanda" they are heavy wearing 4ply with a thread depth of 9.5mm. Wheel dimensions: Overall diameter: 460mm, Max section width: 212mm, Max load: 115kg (255lbs) @ 5 PSI. The 4 inch PCD rim has a 67mm centre hole & 12.5mm stud holes - suits an M10 or 3/8" stud.