The lower the no. the wider the wheel.
If you put et35 on you will probably rub on the front and you might catch on the back arch if it's lowered as you will have to fit a wider tyre in there.
i.e 205/40/17 or 215/35/17 for example.
Ive got et35 and my spokes touch the calipers, so need to buy 3mm or 5mm spacers.