TBH i don't understand all the fuss over S/H tyers
tyers are sriously tough things, puting an obviously damaged tyer on is a really stupid idea but a tyer that less than a year old with lots of tread and no damage or repairs i have no proble with.
I've had more problems with new budget tyers over the years, i've had a frount and rear blow out at the same time going round a roundabout on tyers less than a day old. and quite a few delaminate or deform.
the trailer seems to manage to rip the hell out the plys so they deform in some really funky ways. or give me a set of margoni zetas on hatch back with more than 100 bhp and can make them fall apart on demand pritty much on van they are letahal if theres any weight in there