need just a liitle more help understanding offset guff

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es sex0727
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Okay so i understand now that offset is the distance between the center line of the wheel and the mounting surface of the hub. I still have some questions however: i have a pair of xxr 513's with a 0 offset up front and +15's in the rear i think. But the rears are slanted in towards the body more, that is because of the fact they are staggered, not so much the offset, correct? Also when calculating the offset of the wheel do you measure from the outside edge of the rim to the opposite outside edge, or do you include the sidewalls of the tire in the conclusion. This is to get the "centerline" i believe?


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vocationalzero
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Your rears can "slant in" (which means camber in). I can be due to wheel offset, vehicle alignment, lowered car (coilovers). Staggered wheels don't really affect your camber, it is more the offset of the wheel and the afor mentioned items.

es sex0727
Posts: 40
Joined: Fri Apr 23, 2010 7:07 am
Car: 1991 piggy???
Location: reading, massachusetts

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so if the rears do "camber in" then how does the offset affect that. having a bigger space between the centerline and the hub mounting space shouldnt camber the tires in should it? also i have kyb gr2's could that be some of the reasoning behind some of my camber?

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DanThaMan
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Location: St. Louis, MO

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vocationalzero wrote:Your rears can "slant in" (which means camber in). I can be due to wheel offset, vehicle alignment, lowered car (coilovers). Staggered wheels don't really affect your camber, it is more the offset of the wheel and the afor mentioned items.
what? you just sound confusing.... your camber is not affected by offset in the least bit, offset is purely a wheel measurement, unrelated to suspension geometry changes. OP If your car is lowered, and you dont have adjustable RUCA's, you will have some negative camber. The adjustable arms essentially push out the top of the knuckle to compensate for the change in camber.
Wheel center line is measured between the inside edges of you wheel, as is the width of your wheel ; (a 9" wide wheel is about 10" wide over all) all though the centerline is going to be the same whether you measure outside to to outside or inside to inside :crazy:

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