I am buying a new car. The wheel options are 225/55-19 and 225/65-17.
My old car has 195/60-15 wheels.
I live in a region of the world with lots of potholes. So, the general recommendation is to go with the higher tire sidewall, thus the 17" wheels.
However, if you do the math, I'm going from a 117 mm sidewall to either a 124 mm with 19" or 146 mm with 17".
I'm "relatively comfortable" hitting potholes with my old sidewall. Does that mean that I can get the 19", and still get a slight improvement in pothole resistance? (Assuming the same tire model in all cases for the sake of simplicity.)
(If that matters - mass of the old car is 1200 kg / 2600 lb, new one 1600 kg / 3500 lb, so the new one is 30% heavier.)