99 F150 4x4... 17" stock rims, Whats the biggest tires that can be ran on it, without rubbing or cutting anywhere?
With a 3 inch front and 2 inch rear leveling kit, then can I run even bigger tires on it then, without rubbing or cutting?

Thanks Will

 

33's are what id hit. you may have rubbing. with the lift you can hit 35's with minor rubbing.

 

What about 3 inch torsion keys in the front with 2 inch lift in the back plus a 2 inch body lift or 3 inch body with 35s.. Would it still rub?

 

crank the torsion bars. NEVER GET KEYS!!!

 

I ran a 33x12.5 on a 17x10 rim with some minor trimming with torsion bars cranked up about an inch and a half but went back to a 285/70r17 because I think they look better.

I have nothing against running bigger tires/lifts etc but consider this.. your going to loose gas mileage, probably by 10% with each tire size you move up. You loose suspension travel and have rubbing issues. And honestly, I think it looks funky as hell with 35's crammed under a stock truck on stock wheels. Some may disagree but it is not proportionate if you ask me.
If it were me, a few turns on the torsion bars and 285/70r17's are the right look. Maybe 33x12.5's.. but I prefer the 285's. Fuel mileage is not suffering too much and I still have all the room in the world to go offroad if I need to.

 

Cranking the factory keys the biggest tire you can cram in there is the metric equivalent of a 35x12.50, I think it's 315/70r17 but not totally sure off the top of my head. And that's on stock wheels with some minor trimming. If you add a 3" body lift you'll have no problem clearing them on stock wheels and you could most likely bump up to a 10" wide wheel with around 4.5" backspacing and clear 35x12.50 also with pretty much no trimming, of course this is with the torsion bars cranked also.

With both of these though, your still gonna most likely rub a little while at full lock turning on the frame, depending on how aggressive the tread is, what the tire actually measures out too, etc..