For the love of god I have searched, and cannot find exactly what I am looking for. I have an 06 Supercrew, 5.5 bed, no lift, no leveling kit, but am thinking of the rear drop to level, etc.

I have 20" rims, and I want to know what the largest tire I can fit on it without the front level kit, or even without the rear level kit. I want it to look good, but it's not a 4x4 so no need for the hugest tires, etc. But I would like a little beefier than they are now, which are the 275/45/20 I believe. They are not the suggested 275/55/20. How much bigger can I go with no modifications than a 275/55/20?

Anyone got any pics?

 

WIthout a leveling kit, I'd stick with the 275/55-20 or maybe a 285/55-20 since it's a 4x2.