10″x3″ (3.00-4, 260×85) Optional inner tube with a 90-degree angled valve stem Knobby Q113 tread for traction on soft or loose surfaces This is the 3.00-4 knobby tire used on the Motovox MVS10 gas scooter A very aggressive 3.00-4 tread tire for an off-road capable gas scooter This is the 3.00-4 knobby tire used on the Motovox MVS10 gas scooter. A very aggressive 3.00-4 tread tire for an off-road capable gas scooter. Because pneumatic tires usually require an inner tube, we offer this tire with the option of a matching inner tube. You can select the tire alone, or your tire combined with an inner tube that uses a 90-degree angled valve stem. This tire can be used as a replacement on any application that was equipped with the standard smooth tread 3.00-4 tire for a more aggressive off-road look and to vastly improve traction while off-road.