235 shouldnt raise the car at all as this is the width of the tyre, the 40 profile (height) remains the same
Ideally you'd want the wider wheels on the back too
However 225/40/18 is now a very common size and hence the tyres are cheaper
Being as the new wheels will be wider a 235 tyre wont offer any additional protection on the rim
Ideally you'd want the wider wheels on the back too
However 225/40/18 is now a very common size and hence the tyres are cheaper
Being as the new wheels will be wider a 235 tyre wont offer any additional protection on the rim