When driving to the mountains, it is important to know the laws about carrying winter tyres and snow chains. Not all countries and states or provinces oblige you to wear them. I would suggest you to check before you travel. Even if there were no law for using snow tyres, I would at least recommend taking snow chains, because if you are caught in a big snowstorm, you will need them. If you can buy at least second hand winter tyres, do so. It is an investment, more if you are going to drive to the mountains each ski season.
Also, if renting a car, don’t assume the car will come with snow tyres, even if going to countries full of mountains everywhere, remember to request them when booking your car rental, and also reserve snow chains.
Here is a summary of where snow tyres are mandatory – please you need to do your own search, as this is not by any means 100% accurate- we cannot be held responsible for you deciding not to take winter tyres! Do your own homework!