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Just put on a fresh set of HKS Hipermax on the missus' car, tried setting the height to match the previous (blown) JIC Magic's that were on it. Have a bit of rubbing with a 1.5 finger gap, gonna raise it up another 15mm or so, because Wyoming roads. Good to see what can happen so I can explain to her why having such a low car isn't always a great idea...

Side note @FZoZach how were you rubbing the FRONT of the inner fender? How tall of a tire are you running??? I always assumed it was rubbing the top of the liner...
 

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I had the same thing happen (front tires) when I first installed the HKS Hipermax "S" coilovers. But instead of raising the height, I've increased the preload, and that seems to have fixed it for me.
We live in Wyoming, it was just a matter of being a little too low to live a scrape free life in the land or pickups. :p

Raised it up another 8mm of thread height, putting us right between HKS' "as delivered" and "as tested" heights. Has a nice two finger gap now, but it's not a 4x4, so I'll call it good unless we run into more rubbing. Gotta test it out later or tomorrow anyhow.
 

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I'm nuking it here, sorry in advance.. for the measurement, should I stick my fingers between the top of the tire and closest section of the fender well? Does it matter if I two-finger measure from the top of the tire to the wheel well arc (1200 position) versus the front-most section of the wheel well arc (0900 position), versus the rear (1500 position)?

I confirmed the tire is rubbing on the top of the wheel well, with visible marks on the fender liner. Glad I haven't replaced those yet, but need to now lol.
No worries. When I say a "two finger gap" it's a loose measurement, since everybody's fingers are gonna be different sizes. I'd say I have about a 1.25" gap between the top of her tire and the bottom of the fender opening, roughly, at the 1200 position. That's the critical measurement. If you're not rubbing there, you shouldn't be rubbing elsewhere.

Can do things that allow lower ride heights, but they usually involve having a front suspension that is so stiff that it allows very little movement. Usually this makes for a less than enjoyable ride. Her car, I set the coilover heights to HKS' specs in the manual, didn't touch the dampening from how they were delivered, and we took it on a ~1300 mile road trip, complete with lapping at LVMS. Car rides both realistic roads and track curbs equally well. I'm impressed, to say the least. Never thought a car could be both comfortable AND capable, short of perhaps the mag-ride setups you see on GM and Ferrari sports cars.
 

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You can do it @Vtony0478 It's a pretty easy job, especially if the suspension is fairly new. :)

If you have a lot of dirt / debris on the threaded collars, brushing it off will make things go smoother when turning the threaded bits.
 

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There's a lot of seemingly crappy options out there (Amazon) for coil-over collar adjustment tools. Anyone have a preferred tool that works with the Hypermax IV GT's, and know where I can get one? Thanks again. -Tony
Reach out to Driftmotion, they're an HKS authorized dealer. I'm sure they can set you up with a set of spanners.
 
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