If you were running drag radials I have seen quite a few people get 275's but some deep dish 17x10.5 bullits aren't that expensive, plus you would have a lot more rubber on the ground.
255/45/17's although it throws the speedo off a bit.
Some have done 275/40/17's, but the excessive sidewall bulge can actually hurt handling due to rolling over in the turns. It depends on the tire brand and how stiff the sidewall is.