12-29-2020, 03:49 PM | #2 |
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I have their adj end links on both sways. Haven't done anything else to this point. Quality products
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12-29-2020, 06:08 PM | #3 |
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I have pretty much their whole offering for the M2 waiting to go on the car - do you have a question on anything about the actual parts or is it more wanting to know how they perform on track?
One thing of note on the E9x M3 side you hear about some people having issues with the titanium hardware backing out. Some have reported this happening while others have not had an issue. There are some that change out all the titanium for stainless. |
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12-29-2020, 06:57 PM | #4 | |
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12-29-2020, 10:20 PM | #5 |
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Awesome guys that's great feed back!
I'm looking to potentially do all the arms or at least most of them before a track day end of June. I'm thinking the front thrust arm, rear upper arms to adjust the rear camber, rear toe arm and the front sway bar end links. |
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12-30-2020, 12:29 PM | #7 |
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12-31-2020, 03:28 PM | #9 |
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12-31-2020, 04:25 PM | #10 |
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Easy install unless people have rusted suspension components haha.
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01-03-2021, 09:59 AM | #12 |
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SPL
Why does the SPL have adjustments, when the original one doesn't?
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01-03-2021, 12:38 PM | #13 |
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01-03-2021, 12:51 PM | #14 |
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I'm not an alignment expert, but I don't know how that adjustment will adjust all three of those. I can see maybe Camber, but that's what I have Camber Plates for. I just ordered the OE arm with Mono Balls installed, seems like a more robust part.
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01-03-2021, 03:42 PM | #15 | |
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01-03-2021, 04:54 PM | #16 |
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If I were to put those arms on my car I would have two adjustment points for Camber. Camber Plates and this SPL Arm. Ground Control sells Camber/Caster Plates.
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Last edited by chief1richard; 01-03-2021 at 05:01 PM.. |
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01-03-2021, 05:48 PM | #17 | |
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01-03-2021, 05:51 PM | #18 | |
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Like previously stated the only way to adjust front caster is the thrust arm. Hence why you can get mono ball units with different inserts to adjust caster. I'm deciding to go the SPL arm route to remove pot cast aluminum and remove as much rubber out of my suspension as possible. My car is built for aggressive track and canyon drives. |
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01-03-2021, 06:03 PM | #19 |
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I've done adjustable arms and camber plates in my F31. NVH should be better with just the adjustable arms and keeping the stock top mount.
With my F31 I couldn't reach my camber target with just arms alone (xdrive), however I can do so with the M2. BTW, if you look at the M2 CS Racing you'll see they use arms like the SPL. |
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01-03-2021, 09:53 PM | #21 | |
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Tension Arm
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01-29-2021, 02:27 AM | #22 |
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Caster Adjustment
I used the lower control arms to give more -ve camber but had to go back and order the thrust arms to adjust the caster as it was out of spec, causing binding and rubbing on the inner front fender. I didn't do the tie rod ends as
I haven't lowered it enough so no issues there. But if you go with lower control arms for -ve camber adjustments and you want to go out past -2 up to -3.5 then you will need the thrust arms to adjust the caster - or you will have problems with rubbing and binding. I use my M2 for competitive supersprints at state level and the difference has been around 1 sec/lap with the camber, caster and toe adjusted for turn in etc. Cheapest 1 sec I've ever gotten. These arms will provide far better gain than coil overs etc - I'm always amazed that people don't adjust their camber, toe and caster (need the SPL adjustable rods for this type of thing) and think that coil overs will give a great increase in race type handling - good for ride and ultimate grip but only if you have done all the rest first. I haven't used camber plates in this car, just adjustable arms. Nothing wrong with coilovers and I use them, but getting the geometry right will give far greater handling, turn in and stability increases so I always advise people to do their arms first. Often they then wait some time before upgrading to coilovers as well. My 2c |
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