custom wheels

Well my custom chrome wheels are coming in 2 weeeks! i am so excited after waiting for 5 f##@ing weeks. anyway i wanna know what the best all around size for 17X8.5's are. I heard 245 40 17's are good, but i had some 17X9's with 235's 45 17's earlier that were SEVERLY undersized.............so i wanna know if 255 40 17's are good.... (mostly about front turning radius) or whether i shoudl go with 245's all around? i am looking for all 4 the same size so i can rotate them myself... but i want the rim to be protected...thanks for your help!
 
^ whats wrong with 8.5?? just wondering 245 should be fine, do u have any pics of these wheels like the design or anything? good luck they sound awsome, also i have 9 all around and i have no problem, i only rub the inner fender inside the sideskirt when i turn the wheel ALL the way