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How to calculate offset from backspace.
[(backspace) - (rim width divided by 2)] x 25.4 = offset? please see attached file... Found some Cobra R 17x8 wheels. I know stock mustang GT wheels are +30 offset. But according to this summit racing advertisment, the backspace is 5.72. Which means it's 43 mm? clarify? |
they're definitely 43mm offset if that's what you're asking.
Mark |
Originally Posted by inanimate_object' post='776543' date='Nov 8 2005, 08:45 AM
they're definitely 43mm offset if that's what you're asking. Mark I like those wheels too. Not too expensive. But they frigging weigh 25 lbs!!!! That is baloney slicer territory |
I reckon superleggeras are still the best weight to cost wheels around.
Mark |
you did not include rim lip in your formula, that is not part of the wheel width. 8 inch wheel is actualy wider then 8 inches that is why it doesnt work. here is how to do it.
http://www.rsracing.com/tech-wheel.html#backspace |
If you take into account 1/2" lips on each side (which seems about right to me) you come up with a 30mm offset. You learn something new every day.
Mark |
Originally Posted by kahren' post='777496' date='Nov 11 2005, 04:12 AM
you did not include rim lip in your formula, that is not part of the wheel width. 8 inch wheel is actualy wider then 8 inches that is why it doesnt work. here is how to do it. http://www.rsracing.com/tech-wheel.html#backspace ah!!! that makes sense now |
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