I recently purchased a 2010 4x2 Lariat F150. What size tires can I put on it if I install a 2.5 inch leveling lit. Thanks

 

33-35s

 

Since you have a 4x2, I'd stick with a 33 inch tire, max.

 

Thanks. Would a 305/65R18 work?

 

it should, only thing you need to watch out for is how wide the tires are. if i remember right 305/65/18 is 12.5 in wide which sometimes requires spacers if you are running stock rims

 

A 305/65-18 is basically a 34x12.50 tire. It would probably fit using the OEM wheels but I think they would look too stuffed on a 4x2. Also, if you ever wanted to go to an aftermarket wheel, you would have to find one that is almost identical to the OEM wheels.

 

Your truck will feel a lot slower jumping from your stock 32" tire to a 34" tire. If you have the 3.73 gears, you will probably be OK, if you have 3.55, it will feel sluggish, and if you have an even taller gear, I would count on ~$600 or so to regear as part of the taller-tire modification. At least it is cheaper than regearing a 4x4

 

It's a 3.55, should I just get a 33 inch tire.

 

That is what I am going to do myself. Stock: P275/55r20 (31.9") --> P275/60r20 (33"). I like the look of the 34" or 35" tires, but don't want the effective gear to be too tall - it just makes a vehicle unpleasant to drive. (Jumping in and out of 6th gear, sluggish takeoff, etc)