Yet another wheel offset question
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Elder User
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Yet another wheel offset question
Okay this is lame but I gotta ask because I can't undo what is done once ordered. Thinking about a new wheel tire combo for my 04 super duty f350 4x4. I want 18" wheels now, 9" wide. I know how offset works generally but I don't know how different offsets will look and or work. So here goes:
18x9 wheels
285/75-18 tires.
Leaf spring suspension (currently stock) will be leveled with 2.5" springs.
So I'm guessing I either need a +0 or -10 offset? Does the later coil spring models use. +10? Seems like they need more difference than 20mm to me that's why I'm second guessing. I want the relatively skinny tires to be at just the right spot, while also not rubbing despite their 34.8" diameter. They are 11.2" wide (theoretically).
If anyone has pics of this size I'd be interested. With so many sizes these days it's hard to get good references. I remember when wheels were either 15 or 16.5" and then this new size was 16". Now there's a mind boggling number of tire and wheel combos!
18x9 wheels
285/75-18 tires.
Leaf spring suspension (currently stock) will be leveled with 2.5" springs.
So I'm guessing I either need a +0 or -10 offset? Does the later coil spring models use. +10? Seems like they need more difference than 20mm to me that's why I'm second guessing. I want the relatively skinny tires to be at just the right spot, while also not rubbing despite their 34.8" diameter. They are 11.2" wide (theoretically).
If anyone has pics of this size I'd be interested. With so many sizes these days it's hard to get good references. I remember when wheels were either 15 or 16.5" and then this new size was 16". Now there's a mind boggling number of tire and wheel combos!
Cargo Master
Joined: Jan 2015
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From: Boise
1999-2004 factory offset: +6mm
2005-present offset: +40mm
Running those 285/75/18 would likely not rub on factory offset. I would go with a -10 or -12mm. A Zero would work too. The "-" will slightly widen the stance out, which I like the look of.
2005-present offset: +40mm
Running those 285/75/18 would likely not rub on factory offset. I would go with a -10 or -12mm. A Zero would work too. The "-" will slightly widen the stance out, which I like the look of.
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What's the opinion on using spacers to achieve backspace from newer style wheels? Some of the wheels I'm looking at only come in +18 or so offset. Seems like a 1.5" spacer adapter thing would work to get them in line again, but being a HD work truck I don't want to do anything that will compromise the strength
Former Vendor
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What's the opinion on using spacers to achieve backspace from newer style wheels? Some of the wheels I'm looking at only come in +18 or so offset. Seems like a 1.5" spacer adapter thing would work to get them in line again, but being a HD work truck I don't want to do anything that will compromise the strength
There are 25.4mm in 1 inch. So you would not need a 1.5" adapter for a few millimeters. Most aftermarket wheels would be a +12 or +18mm offset. Which in your case would work fine. Worst case scenario is you use a spacer to dial it in. You can't go the other way. If you get a negative offset wheel you can't pull it back under the truck.
Side Note: I would not suggest a spacer more than a 1/2". Less depending on stud length.
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