I live in Norway and I`m unsure about the sottozeroes due to handling on icy roads. I was considering buying the nokian r2-package, but I`m not a huge fan of the 19" rims and they add almost 1500 USD compared to the sottozeroes which I think is way to much considering taxes are excluded when tires are delivered with the car. I`m thinking about buying the nokian R2 with other rims but they can`t be delivered with tpms and I have to buy it, calibrate it and get them mounted at the teslastore which will cost me up to 800 USD. The tire and rim-package costs less than 3000 usd in total, compared with the 2500 usd pirellis and the tesla r2-package which costs 4000 usd. My question is if anyone has driven without the tpms? It`s not mandatory in Norway but I`m a bit concerned about alarms\warnings that might be intrusive.