I have already directly purchased this Pirelli run-flat tire, so there's no need to keep a spare tire in the car!
CINTURATO™ ALL SEASON SF 2 225/55R18 102V XL
https://www.pirelli.com/tyres/es-es/coche/catalogo/producto/cinturato-all-season-sf-2/225_55-r18/102v-xl?frontId=3912900