You can either get 4 TPMS sensors and install them to the winter tires, or you can just let the TPMS warning light on without installing the TPMS sensors. For TPMS sensors, you can either get OEM or after-market ones. OEM runs about $68.58 each and after-market one such as Autel MX-Sensor 2 in 1 (315MHz + 433MHz) Clamp-in 100% Cloneable TPMS Programmable Sensor runs about $29,95 each. When you get after-market sensors, make sure the seller programmed the sensors to be Mazda CX-5 TPMS compatible.Just bought our 2020 CX5 which is a replacement for our 2014 CX5. I put the winter tires from our 2014 onto the 2020 and of course the TPMS warning came on. Does anyone know if the 2014 sensors are compatible with the 2020 system?