Knightrous
Don't fit 17".... Just don't....
You'll thank me later.

Bit too late for that.. Im trying to use same tires as I run on my SW20.  I have 2 full sets of 17' semi's, didnt want to purchase a set of 15 or 16' rim + another set of semis. 
Wife is going bonta as it is...

17's . . . know a good chiropractor?

dennis the menace
17's . . . know a good chiropractor?

Ah... u guys are starting to sound really old now. 

The money you will save by sharing tires with your SW20 will be cancelled out by the sadness/cost of having a sub par handling car.

My AW11 had 17s on it when I bought it. Wasn't rock hard at all and seemed to handle okay.
Then I put 15s on it and it was a huge improvement. Tyres are cheap too :)
 
FYI, the 17s from your sw20 probably aren't going to work very well on the AW11. The side wall will be too tall and probably hit the spring perch (assuming you're using stock struts and not coilovers)
Mine had 205/35/17s front and rear which worked with standard height springs. 

Im currently running 215/40/17 around on one of my track adubs, without any scrub issues, the other im planning on running same front but 235/40 on the rear.  By looks I think it has the clearance in need, regarding offset.