When deciding on the tire size, you should take into consideration the cost of having the speed sensor reset.
to get the same or nearly so speedo, use this formula:
Height =
Width/25mm : This converts everything to inches easier to understand

previous/aspect ratio: this is the second # = sidewall height
Sidewall+sidewall+rim = tire height
If you change the height by 1 inch this averages 2.5 mph which also adds lots of miles to your odometer and depreciates your vehicle faster.
Hope this info helps with your decision. I used to work in the tire industry.