Tire sizes for all MG models Here you can find all of the factory and the permissible size of tires on the MG. Select the required MG model to see options. Select model 3 3 Cross 3 Xross 350 360 5 550 6 7 750 F GS GT Hector Maestro Metro Montego Ruiteng Ruixing TF XPower SV ZR ZS ZT