Vauxhall - Vauxhall 14/40
The Vauxhall 14/40 was produced straight after the First war for its first public viewing in 1921. It was a 2.3 litre side valve four cylinder. At 2.3 litres the 14/40 was the smallest of the car produced by Vauxhall in the 1920's! The Vauxhall 14/40 was built until 1927, during which time the gearbox went from 3 speed to 4 speeds, and front wheel brakes became standard in 1926.
The original tyre size quoted was 31x5.25 which equates to a 5.25x21 tyre, as produced by Blockley with the correct period tread pattern. The earlier cars would have of course been using beaded edge tyres, and these cars would have had something like either a 815x105 or an 820x120 tyre, again both of which Blockley produces the best examples.