First check exactly what tyres you currently have, as they will most likely be either WXWs or TRXs if Michelin.
If WXWs then no worries, you can happily go out & find alternative tyres of the same size that suit the kind of driving you want to do (eg P6000, etc).
If you've got TRXs however, the car will have "metric" sized rims that can only take the TRX tyre. The non-standard rim dimensions & mounting flange mean that you can't fit anything else. As the TRXs are v. expensive, hard to source & basically "old-tech" you may prefer to go the way of replacing the rims altogether with something else (maybe larger diameter) & then fitting modern tyres. More money initially but you will save after a couple of tyre sets.
This issue has also been covered in previous posts (try searching for TRX).