I've been using this website
https://www.wheel-size.com/calc/?wheel1=225-45-18X7.5ET55&wheel2=225-40-19X9ET40&wheel3=225-40-19X9ET30&wheel4=235-40-18X8.5ET0&fcl=50mm&scl=50mm&wcl=30mm&sr=0mm
It's good because you can customize the guard clearances, but I can't find the values for my car on the...