Hello. I have a 2015 tC with Tein Street Basis Z coils, SPC rear camber arms and bolts, and Rota Grid 18x9.5 +38 on 245/40r18 Michelin's. (SPC rear toe arms in the mail).

I am not happy with how the SPC rear camber arms adjust due to needing to remove the rear wheel and uninstall the camber arm to make adjustments. It's a giant guessing game. Standard alignment shops won't touch it due to the labor intensive process even if offered to pay the hourly rate.

I want camber arms that can be adjusted while on the car. Could anyone give any insight on how the new Godspeed camber arms and the Megan Racing camber arms adjust? The Godspeed arms have 3 nuts between the arm and the bearing,
while the Megan Racing arm is more similar to the SPC arm where it has one jam nut between the arm and bearing, BUT it has an additional nut behind the arm. If anyone has any experience or common knowledge with these I would appreciate it.
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They're the same. The only arms that had an option to adjust without disconnection were the TH arms I believe, but they're long gone. I searched for a set for a while before settling on the SPC's. Realistically though, once you set it you shouldn't have to adjust it too frequently. My biggest gripe with them is that 1/2 turn is actually 0.2 degrees camber adjustment - and when you're trying to dial in fitment that makes for a wonky spacer configuration with (in my case) one wheel spaced 3mm further than than the rest.

 

I did just find these. Quality doesn't appear to be the best but they might be infinitely adjustable. https://godspeedproject.com/scion-tc...ings-2713.html