I have an 08 duramax and the 608's with the vision wheels, the biggest tire i could fit was the 225 without rubbing. The 225's are a little wiggly at higher speeds but I dont drive it like a race car so it is ok.
As far as TPMS goes, it will work but you need a sensor that goes up to the higher psi's and the check tire light will be on all the time. Supposeldy you can get the computer reporgrammed to work at higher psi's but I have not tried it as I dont want to take any chance of voiding my warranty.