I just had some 255 azenis mounted on my rear ap2 wheels on Sunday, and it did take them a while to get them on and to get a good bead

 

i thought it's not safe to run too fat of a tire, say a 255 on a 8' rim?

 

Some food for thought,

AP1 stock wheels.... recommended size = 225/245
Thats on rim widths of 6.5" and 7.5"

I have the same wheels and offsets as the OP and I run 215/245

I'll probably go 225/245 at my next tire change

 

wont work. 615's run 30mm thick..

i mean itl "work" but wont fit properly and damage fender most likely

615's are the anti-christ of fenders