We are looking for winter bikes for the MX5 ND of my sister. It is the version with the 2.0L 118 kW engine. As summer tyres 205/45 R17 are mounted. Which tyre and rim size can be mounted for winter bikes? Smooth size or smaller rim diameters would be desirable to keep costs within limits if possible. Zus atzfrage, what does the MX5 ND have for a tire pressure control system? Is this possible via the ABS sensors or is the expensive system used with pressure sensors? Thank you for your help.