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07-01-2021, 11:15 AM | #1 | |
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SPL Lower Control Arms for Camber and Track Width Adjustment
Most people use camber plates to gain negative camber on their BMWs, but you can also increase negative camber using an adjustable length wishbone/lower control arm and making it longer than the OE arms.
Other benefits of lengthening the wishbone/LCA are increasing caster, and increasing the track width. The caster increase helps maintain higher negative camber when the wheels are turned, and increased track width reduces roll on that axle. For reference, BMW increased the front track width on G8x by 1.5" over F8x (and the rear by only 0.2"). Using these arms with the stock springs/struts I was able to achieve -2.3deg of negative camber at max extension, which produced about 8deg of caster, and widened the track width by 1". Here's an overview on these arms, their features, and how they work. Quote:
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09-07-2021, 02:15 PM | #4 |
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Hello FaRKle! can you share any long term impressions of these? Particularly, how many track days / track miles do you have on these and how are your shocks holding up? I remember reading that using control arms to achieve increased negative camber puts undue stress on the shocks due to strut top angle? Any merit to that?
Given my NVH horror stories (clunks) with GC camber plates, I would be interested in this as a way to achieve negative camber. But want to learn more from real world track use so would appreciate your thoughts and long term review. Last edited by USSEnterprise; 09-07-2021 at 02:24 PM.. |
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09-08-2021, 03:09 PM | #5 | |
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09-09-2021, 05:20 PM | #6 | |
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Swapped them out for Vorshlag plates and have had zero issues… |
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09-11-2021, 06:11 PM | #8 | ||
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For the record, on stock sized wheels/tires you shouldn't rub the inner lip of the fender, but with the 18x9.5 +22 TA5R and 265/35/18 A052s I can get that bit of rubbing. NVH-wise the SPL arms haven't added any. Been solid so far!
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09-17-2021, 06:45 AM | #10 | |
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Very hopeful that the new Millway street plates are better in that regard than GC. |
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09-17-2021, 09:39 AM | #11 | |
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09-17-2021, 09:56 AM | #12 | |
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However, the SPL arms only get you to -2 or -2.2 camber which is not enough. You want at least -2.6 or -2.7 to keep from tearing up outside shoulders of front tires. I run -2.6 and even then, outsides wear pretty good. |
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01-04-2024, 05:04 AM | #13 |
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Sorry to revive this old post but wondering about the rear control arm you did and there noise and vibration.
I have had both GC and currently Vorshlog and the noise upfront sucks. Plenty of negative camber though at 3.2 |
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