Motorbike. Car, Caravan. Tyre Ply: 4. Features a heavy duty 4ply construction which can take up to hefty 200kg per tyre. Tyre Size: 15 x 6.00 - 6. Motorbike, Scooter Parts. Boat, Trailer. Two Garden Lawn Tractor Grass Tyres size 15x6.00-6 with straight valve Inner Tubes.