Wheel Math Help
07-28-2023, 04:07 PM
#1
MBWorld Fanatic!
Thread Starter
Wheel Math Help
Do I have this right
With a +ET wheel adding X width onto to the rear of the wheel moves the centerline (1/2)X away from the old centerline towards the rear of the wheel, and that also means the new centerline is (1/2)X further away from the old mounting face, so does that mean the new ET of the wheel after adding X to the rear is ET+(1/2)X ?
And
With a +ET wheel if I add a Y spacer the new ET is ET+Y ?
With a +ET wheel adding X width onto to the rear of the wheel moves the centerline (1/2)X away from the old centerline towards the rear of the wheel, and that also means the new centerline is (1/2)X further away from the old mounting face, so does that mean the new ET of the wheel after adding X to the rear is ET+(1/2)X ?
And
With a +ET wheel if I add a Y spacer the new ET is ET+Y ?
07-28-2023, 04:36 PM
#2
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Location: Toronto, Ont, Canda
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go fast grocery getter wagon
In general, the more the wheel is extended out (especially with use of spacers) from the factory specifications and center line, the more stress you are putting onto the suspension components. After all, the wheel and tire probably weigh in around 60+ lbs easily. just my 2 cents.
If you have to do it, i guess you may want to customize the wheel so that the center line is still near factory specifications.
If you have to do it, i guess you may want to customize the wheel so that the center line is still near factory specifications.
Last edited by bobblehead; 07-28-2023 at 04:43 PM.
07-28-2023, 11:13 PM
#3
MBWorld Fanatic!
Thread Starter
I think I screwed up. I think adding a wheel spacer Y moves the mounting face of the wheel closer to the center line which subtracts from ET. So the new ET is ET-Y
If that's right I'll edit the original post
If that's right I'll edit the original post
11-23-2023, 09:58 AM
#5
Junior Member
You appear to have some galvanic corrosion between your aluminum wheels and your steel brake area. It can expand under there to make it close to impossible (It seems) to remove. Penetrating oil over night and some swift kicks to the sidewall will do it. But I doubt I would do all that with just a bottle jack. I'd drop it on some stands.
