can I use 2 different size tires on my car
no you can,t ! 2 different size tires it will be hard to hold it on the road ! look on the door sticker and use the size the factory calls for clean around the car !
Did your car come with 2 different tire sizes? Do you think there may be a reason for that?
No, it is not save to drive on different sized tires. The only exception would be if your vehicle came stock with staggered tire sizes front and rear. Otherwise, it is simply too dangerous to consider. Don't risk it.