Here's a 205/40/17 on a 8.5J
http://www.tyrestretch.com/8.5_205_40_R17/
and a 205/45/17 on a 9J
http://www.tyrestretch.com/8.5_205_45_R17/

215/40/17 on a 8.5J
http://www.tyrestretch.com/9_215_40_R17/
and a 215/45/17 on a 9J
http://www.tyrestretch.com/9_215_45_R17/

Thought it might help ya decide on profile sizes