Thanks for the info. I knew some of the earlier FJC's ran 16's, but didn't know if they increased the brake size in later years. ThanksMy 2012 had options for both 16 and 17 inch wheels. And Toyota parts offers both sizes for 2012s and 2013s.
Genuine 2013 Toyota FJCruiser Exterior > Wheels & Wheel Accessories | Toyota Parts Online