Will a 325/60R18 tire fit a 2007 F150 Ext Cab 4x4 with 18x9" wheels (5 3/8backspacing)? I do not have a leveling kit. Does any one have any pics of this setup? Thanks!

 

I think you will need a spacer...

 

I just put a similar setup on my truck. My rims have 5" of backspacing and I do have a level kit. I concur with the previous post. You will need a level kit to fit that size tire. The backspacing should be ok on the rims you are considering..

Check my gallery...
https://www.f150online.com/galleries....cfm?gnum=9310

 

I'd add a leveling kit and you will know they will fit for sure.