Here is my SH on 18x9.5 +38 wheels with 245/45/18 tires. It will depend on your ride height and camber whether or not they rub. Mine rubbed in the rear even after a roll until I dialed in more -ve camber. This is on Konis with RCE WRX Yellows. I have a 1/4" spacer in the front and a 1" spacer in the rear.
The sidewall is quite fat on these tires and I sometimes wish I had gone with a narrower tire and avoided any rubbing but the added traction is nice :)
2010 SWP STi
2013 CGM FXT