Hey John... I got them.... the info is packed in my bag right now (I'm in the LV airport waiting for my flight home)... I can get them to you in a day or so...
I want to say it was 315-35-20 rear and 245-40-19 front but I'm not 100%... I wrote it down... I took alot of pix too.
I actually did alot of "tire/rim" checking on all the Cudas etc just for the same reason as you want them
I can send you all the info I have....