Wheel/Tire offset question-18X10's, '06 F350 - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 09-14-2013, 04:37 PM Thread Starter
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Wheel/Tire offset question-18X10's, '06 F350

I'm looking at beefing up the contact patch of my '06 F350 SRW for carrying a slide-in camper and towing. Im toasting 60k tires in 30k. Currently I have the 18's with 275/70/18's. I believe the stock wheel is 8" wide. I want to go to 10" wide wheels to put 325/60/18's on, so the tire will be the same height(looking at the Goodyear Silent Armor's). I have a stock FX4 package truck, but am about to upgrade the front end to the camper package springs (5600 vs 5200 and I think a little taller.) Im finding most of the 18x10's have a -24mm offset, whereas Im seeing that the preferred offset would be more like +10mm to +20mm. Anybody tire/wheel gurus out there have any comments or suggestions on clearance issues, if any? Of coarse I could just buy a dually.....And yes, Ive been searching and reading the forums, my eyes glaze over trying to figure out this math.
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post #2 of 10 Old 09-14-2013, 05:31 PM
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You are going to want to stay close to 6" of backspacing for clearance. So for 10" wide wheel you should find a wheel with between 0 and +12 offset



2013 Lariat Eco-Boost F150 Super Crew 4x4 20K Miles. Max-Tow 3.73's, luxury package. Amp Steps, Raceline Raptor Wheels, Bak-Flip, and much more.


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Nitto Terra Grappler 295/70/R18 on OEM's
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post #3 of 10 Old 09-14-2013, 05:50 PM Thread Starter
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Perfect, Thank you! Now to find a wheel that matches the description.....

Last edited by doclouns; 09-14-2013 at 05:57 PM.
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post #4 of 10 Old 09-14-2013, 06:42 PM Thread Starter
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If I go by the chart, a 4.5 backspace with a -24mm offset is acceptable. What is the difference from 6/+10?

2006 F350 XLT, SRW, FX4, Supercab. Edge Insight monitoring, MBRP cat-back exhaust.
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post #5 of 10 Old 09-14-2013, 08:13 PM
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Quote:
Originally Posted by doclouns View Post
If I go by the chart, a 4.5 backspace with a -24mm offset is acceptable. What is the difference from 6/+10?
You need to stay close to 6" of back spacing for the tires to clear the fenders. You go with 10" wide on -24 offset the outside face of the rim is out 4" further out then stock!

2013 Lariat Eco-Boost F150 Super Crew 4x4 20K Miles. Max-Tow 3.73's, luxury package. Amp Steps, Raceline Raptor Wheels, Bak-Flip, and much more.


(Sold) 2011 Lariat 6.7 F350 CCLB SRW 4X4 60K MILES
Nitto Terra Grappler 295/70/R18 on OEM's
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post #6 of 10 Old 09-14-2013, 08:30 PM Thread Starter
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oooooh, with the FX4 and the addl lift in the front, that an issue?

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post #7 of 10 Old 09-14-2013, 08:42 PM
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Just for reference, this is how far they would stick out with 18x10" rims with -24mm offset and 325mm wide tires:



If I went with 18x9" wheels then I could get the correct offset, but the 18x10" wheels only came in -24mm offset.

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post #8 of 10 Old 09-14-2013, 09:26 PM
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and thats a 5" lift?

2013 Lariat Eco-Boost F150 Super Crew 4x4 20K Miles. Max-Tow 3.73's, luxury package. Amp Steps, Raceline Raptor Wheels, Bak-Flip, and much more.


(Sold) 2011 Lariat 6.7 F350 CCLB SRW 4X4 60K MILES
Nitto Terra Grappler 295/70/R18 on OEM's
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post #9 of 10 Old 09-15-2013, 12:34 AM
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Quote:
Originally Posted by BIG Laing View Post
and thats a 5" lift?
Yes, 5" Procomp lift in the front (before they switched to the 6" kits)

and 5" Donahoe Racing springs in the rear with no blocks.

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5" lift, 5" Donahoe rear springs, 35x13.50 MTZ's, 18x12 Fuel Hostage wheels, 4.30 gears, Banks 4" exhaust, Airraid intake, SCT from Innovative, ARP headstuds, Bulletproof ficm, Scangauge II, Randy Ellis Design lightbar, Street Scene flares, Harpoon mod, Zoodad mod, LED 2010 taillights, Switchback LED front turn signals
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post #10 of 10 Old 09-15-2013, 07:28 AM Thread Starter
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So far, all I can find...

Rbp Diesel Performance Part 94R-1810-87-12BP - 94R Series - Black Alloy Wheel

2006 F350 XLT, SRW, FX4, Supercab. Edge Insight monitoring, MBRP cat-back exhaust.
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