Standard fitments are:
Daf 600 and 750 (1959 to 1963) - 520-12 crossply tyre, can be replaced with a 145R12 radial tyre.
Daf Daffodil (1961 to 1967) - originally fitted with a 520-12 crossply, which can be replaced with a 145R12 radial tyre. A 13-inch wheel was fitted in 1964, with a 145-13 tyre (145R13 radial modern equivalent).
Daf 33 (1967 to 1975) - fitted with either a 135R13 or 145R13 as standard.
Daf branched out into cars in 1959, it's little aircooled twin car aimed squarely at the popular European tiny car market. It's Variomatic CVT "rubber-band" gearbox made it unique though! The 600 was replaced by the more powerful 750 in 1961, with the Daffodil as a more luxurious version for export. The latter took over until from the 750 until the mildly improved 33 took over in 1967.