Hi: I want to buy Michelin A/S Tires replacing the runflats tires. I would like the Michelins to be slightly larger than the recommended F: 225/35/R19Y - can I safely fit a 245/35ZR 19? AND, the recommended R: 245/30/R19Y - can I safely fit a 255/35ZR19?

If not, what size can I fit? [I have a separate set of rims as snow tires]

Thanks,

Frank D