Hmmm, shouldn't be a problem? The diameter etc is measured including the tread depth, not the carcase size. Have fitted mine on ATs and winter tyres of the same size with no problems Either way, if you give the above people a bell they can go through it with you - they know their stuff. And avoid cheap ones if you are using them off road - a broken chain whipping through a brakeline or wrapping around a spring can really ruin your day.