OK, need to get some tyres for the Falcon Ranchero. It has 13" wheels and there isn't room for anything bigger than 185/80-13 - it's not worth spending two hundred quid a corner for BFG whitewalls so I'm sticking with radials . . . but . . . should I be fitting commercial/van type tyres? I'd prefer to use some Maxxis narrow whitewall tyres, with a rating of 90S I think, which should be well within its operating limits, but don't want to be hauled up at the MOT.