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CA180 · Post by **CA180** » Tue Feb 13, 2007 2:29 pm

Anyone running 17s on there truck? I've got a set of 17" wheels and tires, but the tires are way to tall. They hit the bottom of the bed in the rear.

Stock tire shows G78-15, which would be a 235/60-15, the tires on the 17s are 265/70-17. The current tire is 235/70-15... Anyhow, to get to the point, what would be the biggest tire to fit under the bed on a 15 or 17? And what tires are you guys runnin?

ExplorerNC · Post by **ExplorerNC** » Tue Feb 13, 2007 3:48 pm

I have 265/70-15's on the back of mine. No clearance issues at all. As far as I remember, I don't think a G78 crosses to a 60 series tire though. Should be more likely a 70 or 75 series.

CA180 · Post by **CA180** » Tue Feb 13, 2007 3:54 pm

What kinda back spacing you got going on? Thats an inche difference between your tires and my 17" tires.

AS for the G78, i was going off of this link.

http://www.turbinecar.com/tires.htm

Shows a couple different sizes for that tire

ICEMAN6166 · Post by **ICEMAN6166** » Tue Feb 13, 2007 4:58 pm

tires with letters are passenger car tires.
they are typically load range C.
numbered tires are light truck tires and are load range D and E.
this is the amount of weight each tire is rated to carry.

CA180 · Post by **CA180** » Tue Feb 13, 2007 5:07 pm

Thanks, but wasnt looking for load rating, i was looking for size. I will be running LT tires, but thats beside the point. I need it to fit under the truck, and i dont want to have to experiment to find the size that will clear.

theskytoucher · Post by **theskytoucher** » Tue Feb 13, 2007 9:45 pm

Im running 275/65R15 if that helps at all and i have no clearence issues!

ezernut9mm · Post by **ezernut9mm** » Tue Feb 13, 2007 10:01 pm

http://www.fordification.com/forum/view ... hp?t=17544

btw, the back spacing is 4" and they barely clear the inner fender well of the box.

Calvin Gunter · Post by **Calvin Gunter** » Wed Feb 14, 2007 8:16 am

I have 285/70-15 BFGs on a 15x8 rim in the rear and 255/70-15 on a 15x 7 inch rim in the front but I don't know the back spacing without the truck here at work.Anyhow no clearance issues though.

CA180 · Post by **CA180** » Wed Feb 14, 2007 8:45 am

I'm starting to think these 17's have the wrong backspacing. I'll try and find time to measure it later.

Galaxie64 · Post by **Galaxie64** » Wed Feb 14, 2007 9:29 am

I've got some 17x9s with 265/70/17's on them that I put on my '51. Hopefully when the weather gets nicer, maybe Sunday, I am going to test fit them on the '72 I am curious if they fit. They just barely touch the frame on the front of my '51 at a full turn so you'd think it would fit in a '72 wheel well, although the '51 came with stock 17" rims. IIRC my backspacing is around 4".

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