lads what size bolts will i need for a 2003 e85 if i have these size wheels i'm assuming they'll need to be a bit longer than what's in there currently for my 18"x8j wheels
19" 8.5j et35
19" 9.5j et40 (with 5mm spacers to make it et35)
Bolt length on 15mm spacers i have is 54 mm from the threaded tip to the top of the angled shoulder. So between the standard length and the longer bolts you should be able to come up with the correct length.
The ET of the wheel remains the same as its the offset between the mounting surface and the wheel centre line. By adding spacers you are just moving the mounting surface not changing the ET I believe. The track width is obviously increased