[jim sewell]

As Cliff has mentioned the most common military vehicles had iether 16" or 20" tyres on them .
However 15cwt and 1 ton chevs had 7.50x17 tyres post war.
Also Inters in the sixties and maybe earlier had 7.50x17 on some of their smaller trucks as well.
If they have been subject to years of sunlight at decreased air pressure they will not last long on the road with the constant flexing, however they would be ok for a static display.
Jim S.