I have a 2017 X5M that came with the 21***8221; wheels. For the winter, I bought the BMW winter wheel and tire package. They are 20***8221; rims and have Pirelli tires. I just had the winter wheels/tires put on. The shop that put them on filled the front tires to 36psi and the back tires to 46psi. The plaque on the door says all four should be 36psi. Does anyone know if this is the same for the winter tires and/or know what the winter tire/wheel set up should be? Appreicate the advice.