by the way they are 5 stud
Not sure what size you have at the moment, but bear in mind, any increase in rim diameter, will require a reduction in the tyre profile.
The lower the profile, the harsher the ride (generally)
This site has a pretty good tyre equivilent calculator, which also shows % difference.
https://www.oponeo.co.uk/advice-and-tips/tyre-size-calculator