im at 5/7 on a reg cab with tahoe 20s running 245/45
never rub and barely scrape if ever, but I also have a raised tranny crossmember. Its not too bad to daily, i really never have trouble. Just gotta know how to drive a low vehicle which includes going slow over bumps and knowing where bad spots on your road are. Even though 4/6 would be wayyyy better to daily, 5/7 looks so good so I deal with it lol. I have all belltech parts but at 7inch in the rear i hit my notch alot, so Im gonna have autofab to a custom big notch on the rear here really soon so Ill stop hitting it. I have 17 inch spindles and the damn bumpsteer is really bad, I would make sure to go with the 16. So all in all, 5/7 you can daily but be preparied to drive differently if your roads suck and be prepared to do a little more work to your truck.