Standard - Standard Vanguard Sportsman
The Vanguard Sportsman was available in 1956 and was the performance Vanguard, with the larger bore version of the Triumph TR3 engine, and larger brake drums. The Sportsman was made to 1958 and listed to 1960 to special order.
Standard Vanguard Sportsman tyre size was 5.90x15, which is radial equivalent 165R15 size. Blockley
makes the perfect steel belted 165VR15 with good load and speed rating, for
which see full details at the link below.