Hello all, I have been using this forum for information since I bought my truck back in August, so I figured I should probably just join up! I have a lot planned for the truck and my ambitions are well ahead of the weather here in MI. I purchased the truck with a 2.5in level kit already installed, tomorrow I will be putting on a new chrome grille and 3in chrome bull bar. In the weeks ahead, a new cat-back exhaust (open to suggestions) and I plan on upgrading from the stock 17in rims (currently with 285/70's) to 20x9 Incubus Krawlers and running a 33in tire (still trying to decide on brand/look) once the salt trucks are off the road for good. I have been trying to wrap my head around offsets and thought I had it, but just got off the phone with the manager at Discount Tire who told me I couldn't run that wheel and tire combo. He told me I have a +30 offset and being that the Krawlers come in -12 or +12 that neither would fit. My plans were to run the -12 so I would stick out far enough for some fender flares. My current setup sticks out about 1/4in. According to my math, the -12's would have me out of the wheel wells by about 2in...perfect. Would anyone be able to set me straight here and tell me what I'm not considering?
Appreciate the help!

Ryan

 

Welcome, glad you came aboard!

 

Thank you! would probably help if I told ya'll it was an 05 ext cab Lariat!

 

A -12mm offset on a 20x9 will require the suspension lift due to its aggressive fitment. Since you have a 2.5", it should clear. 33" tire of choice is a 275/60R20. Use this calculator as a guide:
http://www.1010tires.com/WheelOffsetCalculator.asp

 

Welcome to the site

 

Great info Cash!

Appreciate it Scott!