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Wheel offset for stock height truck?

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Old 05-29-2017, 12:27 PM
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Default Wheel offset for stock height truck?

What offset are you guys running on a stock height 2wd truck? I plan to get a set of 20x9 to replace my factory 20's but I have 0 intention of leveling the front. If anything I might put a set of shackles to level the rear down. Seems a lot of guys run +18 but it seems they all have a level kit. Factory seems to be +44 so maybe a +25? Btw I am running 275/55-20 wild peak tires.

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Old 05-29-2017, 12:29 PM
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You'll want as positive as possible unless you want them sticking out. +18 will stick out about 1.75" more than stock
Old 05-29-2017, 12:36 PM
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Ok yeah I don't want that for sure. I think the front sits pretty nice as it is with those tires. The wild peak even though they are the same size, are a bit wider then the factory bfg that they replaced. The rear could come out a little though.

if my math is correct the +25 will give me about an inch wider then factory.
Old 05-29-2017, 01:36 PM
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Originally Posted by Blackpony
Ok yeah I don't want that for sure. I think the front sits pretty nice as it is with those tires. The wild peak even though they are the same size, are a bit wider then the factory bfg that they replaced. The rear could come out a little though.

if my math is correct the +25 will give me about an inch wider then factory.
+25 will stick out 7mm less than +18. 7mm is only slightly more than 1/4"
Old 05-29-2017, 02:16 PM
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Yeah but the math doesn't add up. The difference in stock to 25 is 19mm or roughly 3/4 inch, plus the added width of the rim which is 1/2 inch split inside to outside gives 1/4 wider nothing else changed. Add the 3/4 from the offset and it gives me 1" overall wider for the rim then factory. Going with 18 is just a tick over 1/4 wider. Mathmatically it works but actuality it doesn't always work... Haha

damn there isn't a lot of good options in the 25 and 30 range that's affordable..
Old 05-29-2017, 06:46 PM
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Originally Posted by Blackpony
Yeah but the math doesn't add up. The difference in stock to 25 is 19mm or roughly 3/4 inch, plus the added width of the rim which is 1/2 inch split inside to outside gives 1/4 wider nothing else changed. Add the 3/4 from the offset and it gives me 1" overall wider for the rim then factory. Going with 18 is just a tick over 1/4 wider. Mathmatically it works but actuality it doesn't always work... Haha

damn there isn't a lot of good options in the 25 and 30 range that's affordable..
are factory 20's 7.5" wide? That's what I was assuming.

If they are 8.5" wide, then your math is correct and the +25 will stick out 1" more than oem.
Old 05-29-2017, 07:46 PM
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Originally Posted by mulyhuntr
are factory 20's 7.5" wide? That's what I was assuming.

If they are 8.5" wide, then your math is correct and the +25 will stick out 1" more than oem.
http://www.1010tires.com/Tools/Wheel-Offset-Calculator

here you go.

for what it's worth I've got 20x9 +18 wheels and have a level and bigger tires but I'm quite certain I could still fit a 275/60 on this wheel at stock ride height and not have any issues.
Old 05-29-2017, 08:51 PM
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The OEM wheels are 20x8.5 +44 with a BS of 6.48228.

25.4 mm equals one inch.

Going from +44 to +25 ET is a 19mm difference or 3/4". If it were mine and was given a choice between +18 or +25 wheel, I would get the +25 or wheel with greatest amount of positive offset to avoid potential of contact problems.
Old 06-07-2017, 01:15 PM
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Originally Posted by mulyhuntr
You'll want as positive as possible unless you want them sticking out. +18 will stick out about 1.75" more than stock


I you want that big foot monster truck look with trailer tires on it....great advice.
Old 06-07-2017, 02:02 PM
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Here's a handy little thread that will answer your question


https://www.f150forum.com/f38/tire-w...9-newer-68155/



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