I have 305/55/20 Cooper LTZs on my factory wheels now and am thinking of going to 305/60/20 Goodyears.....The Coopers are 33.2 tall and 12.44 wide and fit great with no rubbing at all.....The Goodyears are 34.4 tall and 12.2 wide so i will be adding about 1 inch of height and loseing 1/2'' width.....Will i need to level the truck or will they be ok at stock height?

 

can you do a test fit at your tire shop. and whats the specs on your truck
4x4.....leveled lifted...screw? aftermarket wheels....?

 

stock height and factory 20s......No level or lift..2009 Platnium 4x4 crewcab....

 

That's essentially a 35x12.50 tire. You will need a leveling kit and they will probably rub the control arms slightly at full steering lock.