to be honest, wheels that wide with that offset are going to make handling pretty horrible. Robin knows this! Expect lots of tram-lining! Philj suspension isn't going to be helping matters either, it's just low and really stiff rather than actually helping matters. If you are using it for any kind of motorsport you need to read the rulebook first as this will dictate what modifications you can or can't make. Ideally you want a limited slip diff, subframe, better suspension, sensibly sized wheels.