Hi all,
While doing some research on what size alloys and tyres I could potentially go for I came across this website. I am trying to fill out the arch gap and also get the wheels to come out a bit more without using spacers. Arch gap isn't as important.
Anyway, enter your current sizes and then your proposed sizes and it gives you details of how far away it will be from suspension strut and how far it will come out and with a really nice diagram.
FYI OEM sizes are below in case anyone needs them.
Width 215
Profile 45
Diameter 17
Width 7"
Offset 48 (I believe).