Looking to upsize from 33's to 35's, and realize I will need at least a 2" leveling kit. Or maybe Readylift's 3.5" kit. My concern is that I do a lot of highway driving so I don't want to give up ride quality. Anybody have any experience or opinions on either of these setups? Appreciate you all's help.

 

When I bought my truck it already had a 2" leveling kit and 35s so I can only tell you how it currently handles.

Its not uncomfortable but its not the smoothest ride. I really don't notice anything until I drive a different car/truck that has better suspension and tires. I don't think you'll notice a huge difference going from 33s to 35s.

I've run Toyo Mud Terrains, Nitto Terra Grapplers and I currently have Falken AT3s. All 35's, and I highly recommend the Falkens. Hope this helped.