Hey guys. I have an 01 7700 series, soo basically a 1999 f250 pickup. It has the 3.73's with the 10.5" rearend, and the 4R100 tranny with the 7 lugs wheels and extra leaf spring in the back. Right now it has on 245/75R16's Would i notice any loss of power, fuel economy with a tire nearly 1.5" larger? BTW i use this truck for hauling horses and other trailers sometimes across state lines. Towing is a concern! thank you all!

 

I doubt it, they are only an inch taller and wider.