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#1
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Would someone please explain what the wheel ET number is.
P E H |
#2
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ET is the offset, so ET 35 would be an offset of 35.
Alon
__________________
'92 300CE - Sold 2004 C240 - 744 - C7 Wheels - Android Radio 2002 C320 - 816 - Sport Wagon |
#3
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What is an offset? Is the 35 in millimeters and measured from where to where?
P E H |
#4
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It measures the distance in mm of space between the center of the wheel to where the wheel mounts to the hub.
__________________
Chirag (Charlie) Patel -------------------------------------------- - 03 Mercedes S600 Sport TTV12 - 97 Acura NSX-T - 99 BMW E36 M3 w/500+ HP - 04 Lexus RX330 - 04 Dodge Dakota Quad 4x4 V8 4 Sale: - 99 BMW M3 E36 Coup with Dinan SC, Upgraded to an RMS Stage 3 with Aftercooler, 12psi, and 500+hp @ flywheel. |
#5
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Chiragp:
Thankyou. P E H |
#6
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I devised a formula to calculate the offset (ET) of wheels if they aren't marked.
ET = (W / 2) - D Where W = width of wheel (outermost distance) D = distance from mounting surface to a straight edge across the inside flange edge of the wheel If you made the measurements in inches, multiply the ET calculated by 25.4 to get millimeters. P E H |
#7
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the higher the ET number, the bigger the offset
A higher ET number will give the wheel more offset (going furder towards the fenders...
__________________
1990 300SL-24 1993 C250D with a minor 600+k kilometer www.MBenzNL.com(the Netherlands) |
#8
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Offset Calculators
There are several offset calculators on the web. The one I find most useful is http://toy4two.home.mindspring.com/offset.html
This calculator actually tells you how much further your new wheels will protrude, in comparison with your stock wheels.
__________________
Dean Albrecht "Lead, follow, or better yet, get out of the way!"E500 owners motto |
#9
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Positive and Negtive offsets:
Mbenz,
I think you mean with a negative offset as where most cars now have positive offsets, the following is true: Example: if a wheel with an 5mm positive offset, the mounting surface is 5mm out from the centerline of the wheel. A wheel with a 65mm positive offset means the mount surface to the hub is 65mm outboard further than the centerline. For instance, I'm using Porsche wheels on my 190 that have a 65mm positive offset. To use these I have custom machined spacer/adapters that are 30mm thick to bring the wheels out to the fender where they belong with a 35mm offset. With negative offsets just the opposite than above is true. Confusing, ehh?? TobiasMB 4 MBs [Edited by Tobias MB on 01-21-2001 at 04:52 PM] |
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