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  #1  
Old 10-14-2010, 07:51 PM
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Wheel offset ?

So i am looking for some wheels but i need to know what will clear and not rub the radius arms i am trying to keep the tucked as much as possible. The wheels come in a 22x9.5 +8 offset and +19 offset thats like 5.5 or 6" backspacing the tires will probably be 325/50's. I think the +19 may have them in to far with almost the stock offset of 6"s any help with this would be great!
Chris
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Old 10-15-2010, 04:51 PM
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Anyone running positive offset 9.5" or 10" wheels?
Chris
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Old 10-16-2010, 08:33 AM
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Stock offset on '08+ trucks is +40mm, so the +19mm will move them out 21mm or about 3/4". If you want them tucked, +19mm is the way to go, +8mm will be sticking out quite a ways.
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Old 10-16-2010, 11:16 AM
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Correct stock is like +44 i think but that is a 8" wheel . +19 is a 6" offset on a 9.5" wheel basically what stock is however the tires are wider and may hit the radius arms. I dont know how much clearance i have right now to the arms with the stock 20"s.
Chris
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Old 10-16-2010, 12:44 PM
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No, you are confusing offset and backspace. Offset does not change with width. Offset is the hub surface to wheel centerline measurement. Backspace will change where the wheel sits with different widths, but offset is independent of width.
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Old 10-16-2010, 01:22 PM
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I just found a offset calculator it says from the 8" +44 to the 9.5 +19 they will give 6mm of inside clearance more and stick out 1.73" further.
Chris
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Old 10-16-2010, 03:41 PM
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Wheel offset is the measurement from the mounting surface to the wheel centerline. It doesn't matter what width the wheel is, the offset is only the position of the center of the wheel. In the same manner, it is the relation of the center of the tire. Sure a wider wheel of the same offset will move the inner surface of the wheel closer to the frame, but the center of the tire and edge of the tread will not move with wheel width, they will move only with offset. The sidewall will bulge out more on a wider wheel, but the tread edge will be in the same place. If you run a wider tire, you need to change the offset by about half the tire width difference to keep the same clearance to the radius arm.
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Old 10-16-2010, 06:46 PM
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Its starting to make sence but you say the side way will bulge more on a wider wheel i thought is was the other way narrow wheel more bulge from a wider tire?
Chris
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Old 10-16-2010, 11:06 PM
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I shouldn't have said bulge more. The sidewall will stick out more on a wider wheel (section width is wider), on a narrower wheel the sidewall width will be narrower, but it will balloon more.
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Old 10-17-2010, 05:17 AM
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I got you wider wheel will make the side wall wider as its streching out more. I think the +19 will work fine i found 2 trucks here here running that size wheel and tire combo with no issues! thanks for the help!
Chris
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