In the UK for a couple of weeks from my lair in southern France, where I am mostly v happy with the fitted Hancooks summer tyres. Popped into Costco with my stepson to price up all season alternatives. They could supply Michelin CCs for £230 a corner fitted. But on discovering that my Model Y was still in warranty the guy said that they wouldn’t be able to fit them because they weren’t Tesla specific and were worried that might void the vehicle warranty. Anybody heard of this before?