I have a 2005 F250 and have 295/70/17 (34" tires). I measured mine and my friend's trucks (2005 F250/2005 F350). Mine has a gas engine, his a diesel. His sat one inch lower than mine in the front and one inch higher in the rear. The trucks were optioned the same, so it's my contention that the diesel sits one inch lower in the front, so you may be real close with 35" tires.
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