Hp Evo Question
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Staging Lane
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Joined: Oct 2005
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From: Ocean Springs, MS (Gulf Coast)
Hp Evo Question Can anyone tell me what the backspace is on the 18x9 Hp Evo's? Heres a link on how to do it.
http://www.rsracing.com/tech-wheel.html#backspace
http://www.rsracing.com/tech-wheel.html#backspace
Last edited by 93 4mula; Nov 12, 2005 at 08:48 PM.
Backspacing and Offest are ALMOST the exact same thing, you just have to crunch the #'s out....Offsets are another way of measuring backspacing.
enjoy
a 10" wide rim with a 5" backspacing has a 0mm offset.
a 10" rim with a 7" backspacing would be a 50.8mm offset
a 10" rim with a 3" backspacing would have a offset of -50.8mm
1" is roughly 25.4mm
enjoy
a 10" wide rim with a 5" backspacing has a 0mm offset.
a 10" rim with a 7" backspacing would be a 50.8mm offset
a 10" rim with a 3" backspacing would have a offset of -50.8mm
1" is roughly 25.4mm
Last edited by FLAWLS1T/A; Nov 12, 2005 at 10:34 PM.
Originally Posted by FLAWLS1T/A
Backspacing and Offest are ALMOST the exact same thing, you just have to crunch the #'s out....Offsets are another way of measuring backspacing.
enjoy
a 10" wide rim with a 5" backspacing has a 0mm offset.
a 10" rim with a 7" backspacing would be a 50.8mm offset
a 10" rim with a 3" backspacing would have a offset of -50.8mm
1" is roughly 25.4mm
enjoy
a 10" wide rim with a 5" backspacing has a 0mm offset.
a 10" rim with a 7" backspacing would be a 50.8mm offset
a 10" rim with a 3" backspacing would have a offset of -50.8mm
1" is roughly 25.4mm
Not exactly. BS and offset are related, but you have to include the bead/rim edge thickness, which on every wheel is different. But for quick guesstimating, I use 1/2"
So, a 38 mm offset 9" wide wheel would be:
Offset (converted to inches) + 50% of rim width + 1/2" =
(38 / 25.4) + (.5 * 9) + .5 = 6.5"
So a quick guess is 6.5" backspace.
