Wheel rear 4.5 x 15 dia (for drum brake)

These 4 1/2 wide rear wheels where first fitted to the Cooper T39 Bobtail and T41 in 1956 and then the later T43. They would suit cars fitted with the 10" brake drum. A similar but different wheels is used on the early Disc brake wheels. Wheels are manufactured using period correct magnesium sand casting techniques, from our own patterns at the leading motorsport magnesium foundry and machined in house with the latest CNC lathes & mills. Safety beads are incorporated and machined to the industry ‘ETRTO’ standards, as is the rim diameter to ensure correct tyre fitment and sealing. These improvements over the original wheel permit the use of tubeless tyres. Once the machining processes have been completed all wheels are subject to full dimensional inspection on our high accuracy, computerised co-ordinate measuring equipment. All our magnesium wheels are then subjected to a process of double impregnation and final pressure test which ensures correct sealing and no air loss. These wheels have a backspace of 66.2mm