Motorbike. Car, Caravan. Moulded strong 2 ply rubber. This tyre requires an inner tube. A high quality pneumatic Tyre & Inner Tube commonly used on Pushchairs / Prams. Motorbike, Scooter Parts. Replaces any 12.5x2.25 or 12 1/2 x 2 1/4 or 12 1/2 x 1.75 or 12 1/2 x 1.90 or 12 1/2 x 1.95 or 12 1/2 x 2.125 or 57-203 tyre fitted to Pushchairs.