Okay, in my quest for narrower tires I found out my current Continental Extreme Contact DWs have an even narrower tread width than the Hankook Ventus V12 Evos by .5" (f) and .1" (r) so I might not need to order new tires. I am still trying to find tread width info on the Toyo T1R and Falken 452s for their size in 255/35/18. Again so many thanks to all who chimed in.
Also here is where I got my info according to TireRack (look under specs):Continental Extreme Contact DW->
http://www.tirerack.com/tires/tires....omCompare1=yes
Hankook Ventus V12 Evo->
http://www.tirerack.com/tires/tires....omCompare1=yes