I installed a Baer Track Kit on my car recently and they barely cleared my 17x 7.5 SSR's without any mods or issues. I can try to verify the offset for you, as I don't recall exactly what they were off the top of my head. I know the Baers are a lot more forgiving as far as fitment than the 3KGT VR-4 caliper setup.
Edit: +42 Offset