On the way home from running errands Saturday I ran over some piece of metal and I think the tire is toast. The tow truck driver thought so too, but I won't know for sure until Tuesday. My bad luck to get a flat on the first day of a holiday weekend. The tire was losing air so fast I had to limp it to a gas station and try to get it to seal with a can of sealant, but it lost air as fast as I was putting it in. Tesla's roadside assistance got me a ride share home so I could get our other car which made things easier. After we got the car on the flatbed, the damage was right on top so I was able to get a good picture. It looks like some kind of bracket or retaining cleat. Last time I was into the service center they said the tires still had tread on them, but they were within 1/32" of when they recommend replacing them. I figured they would last the summer and I would replace them before the winter rains started up again. But if I'm going to have to replace one tire, I might as well replace them all in one go. Anyway, me being me, I had done some research and my go to was the Michelin Primacy MXM4s. The Goodyears (19") that came on the car have been OK, but they haven't worn well at all. The car only has around 16K miles on it and the original tires are getting close to end of life already. I did a few hard accelerations early on, but my stomach didn't like it and i really don't see the point in it really. I tend to accelerate moderately and try to maximize regen when slowing down, but all the regen might have worn the tires. If I need to get new tires, I'm probably stuck with what the local shop can provide on short notice or let the car sit there for a week until something else can be ordered. They're closed until Tuesday, but I looked at their tire selection on their website. They claim to carry the Primacy MXM4, but the largest they have on their site is 18". They did have the Pirelli Cinturato P7 All Season Plus advertised in my size, so they might be able to get those same day. Both the Primacy MXM4 and the Pirelli are advertised as low rolling resistance, good mileage tires and both are well rated on TireRack.com. Though the Pirellis were rated better in every category. I thought I would ask what other's experiences have been with the two tires. I'm most interested in efficiency and traction under various weather conditions as well as wear. Low noise is a nice to have feature, but if the better tire is a little noisier I can live with it.