I've noticed that a lot of wheels for the Impreza have positive offset of 50mm and higher. Subaru-made 17X7 are +53; many after market 17X7.5 have 3 to 5 mm less. So shouldn't at least some of these fit the TSX as well? Just a thought.

 

You gotta look at the bolt pattern too.
But I wouldn't want rims with "Subaru" logo on "Acura" vehicle.

 

I went to a site called gruppe-s.com (spelling may be off) and I saw several 17X7 & 17X7.5 from Volk, Advan, and others with the 5X114.3 bolt pattern and +48 offset or higher. I should have been more specific, I didn't mean to suggest putting something that says Subaru on an Acura.