Camber/Caster Top Mounts Suspension Secrets vs Ground Control

[LukeK_GT]

Looking at adding Camber top mounts to my new 2026 Supra Track Edition(FInal for Stateside people) for track use.
I will be running 275/35/19 (Brand yet to be worked out) on 19x10 OEM rims with appropriate spacers as I am limited by rules.
Will be running OEM Shocks and putting on HKS HAS springs for clearance and to allow -3 degrees of camber from the top mounts.


So, the real question, Suspension Secrets vs Ground Control.
Not seeing much talk about either of these mounts, especially the first option.

Does anyone here have feedback on either?
Below is what I have worked out with very little info on these forums or other sources relying on their own product pages.

The Suspension Secrets product looks like a solid bit of kit from the pictures.
I like that is has 3 hard set points of adjustment, so no chance of slipping or moving.
However the camber and caster are not independent adjustments. More Camber = More Caster.
My big concern is tyres rubbing the fender liner front side with too much positive caster set in these mounts.
And they literally advertise their Caster lower control arm bush as a fix to tyres rubbing when setting their top mounts to maximum negative camber/positive caster. Like they are trying to make you buy 2 products.

Whereas Ground Control has the adjustments independent negating the issue.
And it seems you can change parts in them if you ever move from standard springs to coilovers.
So no buying a whole set of new mounts down the track if I every move from standard spring system to coil overs. Just one part of the mount.


I am open to the Verus and Millway mounts as well which I know don't have caster adjustment at all.
Immediately I rule out Vorshlag due to pricing in Australia.

As I am in Australia the pricing equation is not like it is for you guys in the US.
I could cop import fees, but it is hit and miss if you do or don't
Import fees for $1000 AUD item ends up around $205 on top. (Add 5% Fee + then times 110% for GST +$50 processing fee)
European brands actually end up cheaper if there is no Australian retailer selling the product.
So Millway and Verus is a lot cheaper here than Vorshlag and Suspension Secrets is a lot cheaper than Ground Control.

Basically in $AUD shipped to me
Verus $940 (Aus Retailer)
Millway $970 (EU Import, so possible up to $1170)
Suspension Secret ($970, UK Import, possible up to $1170) OR ($1170 Aus Retailer to avoid hassle)
Ground Control $1165 (US Import, so possible $1395)
Vorshlag $1249 (US Import, so possible $1492)

The tight arse in me is saying save the coin, just go with the Verus, but I am quite keen on feed back of the two forementioned camber/caster mounts from Suspension Secrets and Ground Control.
And definitely not ruling out Millway as I may gamble and luck out and not pay import tax.

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[LukeK_GT]

Doh. Off to a good start. Should be in the Suspension, Chassis, Brakes section.
Definitely forum rusty.
Can Mods move?

 

[razorlab]

I run the Ground Control camber plates on my M240i. Expect next to no customer support and if you even get any, it takes forever and they ship parts they forgot to include in the initial order the slowest most cost effective way for them.

 

[Subydude]

I haven't run the two you mention, but I also haven't had slip issues with the Verus minus one time where I don't think I double checked the socket bolts. After that I paint marked the location and double checked the bolts and the camber plates have stayed.

The other options all look good though. Mine has H&R springs, and any setup that uses the top torrington bearing the stock spring uses is going to be limited to about -3.5 or -3.7 before hitting the inside of the strut tower. Fixed positions means you might have some difference side to side (if that matters to you, it doesn't to me) that you can't adjust out.

I found the caster from lowering the car was plenty (around 7.8 degrees) so I'm not sure I'd want too much more. This is subjective though, and you might prefer more centering. Mine at -3.5ish front camber and 7.8 caster gives pretty even wear on the tire on track, and I found running about .1 degree of toe in per side up front helps preserve the inside front shoulder while also mimicking the extra stability of increased caster. Also no downside for turn in (again to me).

Either way, I don't think you can go wrong with any of the options. Especially if you paint pen the ones that are slip adjustment. Pick the one that fits the budget best and has the largest bearing/best reliability chance.

 

[LukeK_GT]

Hmm.
Ground Control and missing or wrong parts is something I have read for other cars as well.
Being half way round the world would make it painfull to deal with.
And are expensive for me to get here.
Looks great on paper but I think I will have to rule them out.

That sort of leaves Suspension secrets as the only camber + Caster option.
They advised via email the 3 camber settings with a disclaimer on ride height dependance are -1.8, -2.5 and
-3.2 degrees. They should just put that on their site.

It is honestly looking like Verus vs Millway for me based on price and not having issues with too much Caster.
Looks like the Millway has replaceable bearings. Will contact them to better understand that.

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