Our 17" ARC-8's can clear the E9x M3 calipers as well. Although it's not a popular setup, we certainly think the 17x10" ET25 square setup is understated. Here are a few shots of one of our employee's cars on the 17x10" ET25 square setup:
The rear suspension has a control arm bolt that has close clearance. Here is a shot we took to show how much room there is with this setup:
Some of our customers have gone as far as having this bolt head professionally machined down ~2mm to have a worry free 17" fitment which is a great, budget friendly, track oriented setup.