I have a huge delema im going through right now. I was planning on running the 36/13/5 irok bias ply tires on my truck after i lifted it. However when i went to my local tire factory shop they said there selling out of the superswamper line of tires. 
so i had them search for the 36's and they didn't have any left. However they did have a couple sets of the 39.5 iroks for sale and said they would "give" them to me for 210$ a tire (the price for the 36's) i wasn't planning on running this big of a tire. Should i do it or go somewhere else and get the tires i wanted? Im so torn, ill have to buy r/p gears now a little sooner then i thought if i get the 39.5's 
i don't know what to do.
Send them to me and I will send ya my 36s and some cash.
Thats a great deal on those tires and I think it is too good to pass up.
I would definately buy gears really soon though.
