Volvo Troubleshooting Questions? Ask a Mechanic for Answers ASAP
Your new wheel/tyre is now bigger hence the higher stance.
Now you have slower acceleration, incorrect speedo reading, less efficient braking, and possibly worse fuel economy.
Coupled with that you face the possibility of a car that doesn't handle as well as factory, and now the chance of tyres rubbing on the guards etc.
I'm sure you find a suspension package that will work with the wheel size you have and give you the stance you want.
Generally with adjustable coilover shocks.
There is no legal way to lower ride height without changing parts.
I hope my advice has been of assistance to you.