The biggest you can go with no modification is 285/50/22 on a stock wheel. That’s equivalent to 33.2” diameter and 11.2” wide. If you don’t mind some light trimming, you can go up to 35/12.5/22. The pic of mine has Toyo Open County AT3’s on Fuel Siege 22x10 with a -18mm offset. I had to remove some wheel well plastic to get them to turn lock to lock with no rub on all ride heights. However, my truck is leveled with Daystar spacers and Revel Performance Links. Either way, your going to be out of $2k on tires once you get them mounted and balanced if you want to keep a comfortable ride. There are some cheaper options but you will definitely feel the difference and you’ll find yourself buying new tires every 20k miles. Hope this helps and good luck on your search!