Stock 14" Rally. What's my max width tire option?

14's on the front are easy cause of all the jap ricers out there. On the rear I switched to 15" but these are still available in 14"

http://www.mandhtires.com/store.php?crn=73&rn=310&action=show_detail

http://www.summitracing.com/parts/MTT-1036/

http://www.summitracing.com/parts/MNH-MSS002/

http://www.summitracing.com/parts/HOO-17030/

and more...