Discovered the inside of my rear tyres are borderline illegal. Mind you, they've been on almost 5 months which is a bit of a record!
Should be able to turn them and get a couple more months out of them too.
Unfortunately means I've had to put my winter tyres back on temporarily, which don't have any covers, and have taken the fronts off to match as I still need to play with my break setup.
Too many old sheds.