Hello, I would be interested in which profile depth you exchange your summer tyres or your winter tyres? I once heard that you should replace summer tyres at 3mm profile depth and winter tyres at 4mm. My front winter tyres currently have just over 4mm profile depth and I’m not sure if I should exchange them soon. And then another question: There are always cheap tyres on the internet. Let’s say I would like to change which tyres this winter. but let the tyres be pulled onto the rims only the next winter. Would that be advisable? And how do you store the tyres best? Just laid on top of each other in the basement/garage?