rims and tire question - Ford Powerstroke Diesel Forum

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post #1 of 15 Old 03-22-2013, 03:31 PM Thread Starter
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rims and tire question

i had a front blowout yesterday and i am thinking of buying a set of procomp rims because they are cheap and will work for now but the are 8 X 170mm with a 4.5 in backspace. 16.5 X 10. im wanting to install a set of military h1 tires that measure overall at 34" but the truck is stock height. i can get a set of 33's if they wont fit. but my main question is will the rims fit with that backspace?
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post #2 of 15 Old 03-22-2013, 05:27 PM
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Originally Posted by greasemykey View Post
i had a front blowout yesterday and i am thinking of buying a set of procomp rims because they are cheap and will work for now but the are 8 X 170mm with a 4.5 in backspace. 16.5 X 10. im wanting to install a set of military h1 tires that measure overall at 34" but the truck is stock height. i can get a set of 33's if they wont fit. but my main question is will the rims fit with that backspace?



4.5" BS for the stock 8" wide 0 offset wheels on your excursion.

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post #3 of 15 Old 03-22-2013, 05:59 PM Thread Starter
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so the chart said with a 10" wide rim with 4.5 backspace i should have a 25mm offset and the rims say 22mm. so that is close enough correct? or is that 3mm going to bury my 33's in my leaf springs?
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post #4 of 15 Old 03-23-2013, 07:27 AM
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Re: rims and tire question

The wheel you describe is what is on my red trk. Rubs inner fender but not leaf springs with 315-75-16 (metric 35"s)

Our Ex with stock wheels and 305-70-16 does rub leaf springs but clears everywhere else... but barely.

Should work for you... the tire however I would advise against. Will need lift for clearance.

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post #5 of 15 Old 03-23-2013, 08:54 AM Thread Starter
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i need a lift to clear 33's? damn it
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post #6 of 15 Old 03-25-2013, 10:16 AM
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Originally Posted by greasemykey View Post
i need a lift to clear 33's? damn it
I dunno... I thought the 305's on the Ex were metric 33's, but on our stock wheels, they don't rub except on the springs. Put the same tires on the wheel you describe, which is the same as what's on my red truck, and they might rub on a stock Ex. I plan to put that same wheel on the Ex, but not right now, as we are in the process of buying a house, and aftermarket wheels are not a high priority. However, the stock wheel IS too narrow for that wide of a tire, in my opinion. 10" wide might be too wide as well, but we plan to lift the Ex, and at that point the 16x10 would be fine with 315's on it, 4.5" b/s, or -25mm offset.

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post #7 of 15 Old 03-25-2013, 11:42 AM Thread Starter
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305 is the width of the tire not the overall height. a 305 tire is just barely over 12 inches wide. assuming that a 315 would put me right around 12.5". so what i am getting at is a 315 70 r16 would be a metric version to a 33 12.50 16. from what i gather from you is if i run a -25mm backspace i might rub just a little on the leafs i am perfectly ok with that. i will put in 2" leveling kit up front to lift the front a bit. but im glad that the rims and tires i want will fit just fine. i just cant afford a 4" lift kit at the moment. thanks for the help though. i didnt want to buy rims and tires and they not fit. wife would kill me.
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post #8 of 15 Old 03-25-2013, 12:26 PM Thread Starter
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one more question. i have seen guys running 33 12.50 16 on 7" wide rims. the rims i want are 10" wide. is that wide enough or should i go with a 12" wide rim?
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post #9 of 15 Old 03-25-2013, 12:36 PM
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10" is perfect for a 12.50 tire.

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post #10 of 15 Old 03-25-2013, 12:51 PM Thread Starter
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word. looks like i will be ordering a set of pro comp steel wheels. they are in a price range i can afford. CHEAP. i am looking at a set of BF Goodwrench T/A KO tires 33-12.50 16.5. summit has them at 199.99 each. unless someone has had better results with another tire in that price range. i just dont want or need a soft mud tire.
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