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07-09-2009, 09:13 PM | #1 |
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Anyone used 26.5mm and 23mm M3 sways on their 135?
I am doing either the M3 26.5mm front with the 20mm or the 23mm rear. I was wondering the outcome of using the larger 23mm rear?
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07-10-2009, 12:50 AM | #2 |
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getting a 23mm over the 20mm will probably give the car a more neutral feel thru the corners. If your gonna go with both front and rear u might as well go with the 23 mm.
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07-10-2009, 01:03 PM | #4 |
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There is indeed. HP Autowerks sells it. I'm not too sure it's new. If I recall correctly they used to sell the 20mm.
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07-10-2009, 04:03 PM | #5 |
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The 20mm rear bar is from the M3 coupe/sedan. The M3 convertible has the 23mm rear bar. I know the larger bar should dial out more understeer. I was hoping someone could comment on how the 23mm front with the 20mm rear bar drives. How neutral does it get? Thanks
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07-10-2009, 09:37 PM | #6 |
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I've plug the 23mm rear bar into a suspension spreadsheet (assuming wall thickness similar to other M3 bars at 3.5mm). With stock 135i springs, the 23mm rear bar may be too stiff. I've got a front weight bias of about 52%. As a reference, the 20mm rear bar gives a front weight bias of 58%. In other words, the 23mm may give too much oversteer. Check with Harold at HP for his opinion.
When I had the M3 bars installed with the stock 135i springs, the understeer and roll of the car was much reduced. Last edited by AW135i; 07-11-2009 at 04:12 PM.. Reason: added comment re wall thickness |
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