I just purchased a 2006 250 super duty diesel crew cap I was wondering could any body tell what is the biggest size tire I can put on stock rim with stock height also I have a superchip power programmer for sale for a 2001 f150 4.6

 

What rim size?

 

17" i believe 7' wide

 

S/B a 17X7.5...

A 285/70/17 (33") will fit with no problems.. Anything bigger like a 315 would most likely rub.. The 265's are a 31.5-32 I believe depending on brands.. If you don't go to big there isn't any need to recalibrate for tire 'oversize' (gem module) as smaller dimensional differences are calculated for...

 

Ok thank you will look for some pro comps 285/75

 

I don't know of any brand that makes a 285/"75"/17.. "YET" ..Could be wrong though

The 285/70/17 is a clean fit in that MY.. If you do go alot wider on rims, or much taller tires, you may have to do a slight lift, like 2" or leveling blocks for fit.. These trucks sit nose down in the front and would have to be leveled to go to a 9"wide rim or greater to avoid rubbing up front.. Running 'tall' sidewall tires also compromises the side wall for sway/stabilty as well..

 

that was a typo 75 I use to have 265/75 on my 150 how hard is it to do a 2" levelin kit would look it with pro comp 285/70