Lowering Springs for daily driving/occasional track use

[Andrew4Supra]

I’m a big advocate of the Eibach Euro Z4 Pro Kit springs.

A mild even drop to lessen the wheel gap without the slammed look.

Providing .8” on all four corners.

The ride is truly near stock with less body roll.

I am running Burger Tuning Spacers in these pics 15mm rear and 13mm front.

Sponsored

 

[BigRon]

I was not a fan of how the car bobbed up and down during breaking/acceleration

This ^^

Don’t know if lowering springs are a good option for track days.
Why not go for a good suspension?
You can set ride height and stiffness.
Or check out the stock suspension and springs at first.

 

[decodeddiesel]

Not for nothing, people who know a lot about these cars have figured out how to make them faster on track while still maintaining their street manners.

 

[MisterSkiz]

Not for nothing, people who know a lot about these cars have figured out how to make them faster on track while still maintaining their street manners.

In that same vein - I would like to see what setup the Supra GT4 is using - all the literature says it has KW Suspension - which in my opinion is garbage. Whenever my OEM Dampers take a dump I'll be replacing everything with Ohlins or Penske products.

 

[Rocksandblues]

I track with eibach pro springs and sways. I cannot recommend for daily.

I am upgrading to a full coil over set up soon. My track times are very close to track records in my SCCA class. Suspension and cooling are probably my limiting factors. tune is only 450hp I drive aggressively, and I try to explain my set up as go-cart-ish with regard to suspension. I do beat on curbs and come through corners sideways.

If you or anyone is serious about track start with good suspension. eibach pro make the car a handful and i lose traction often. I have learned to drive the dog pee out of the as she is now.

 

[decodeddiesel]

In that same vein - I would like to see what setup the Supra GT4 is using - all the literature says it has KW Suspension - which in my opinion is garbage. Whenever my OEM Dampers take a dump I'll be replacing everything with Ohlins or Penske products.

I was disappointed too when I heard Gazoo Racing went with KW. There's just so many better options available.

MCS 2-way non-remote with Vorshlag camber plates and Ohlins with Millway camber plates are on my shortlist for coilovers when I get there. I'm still exploring what the stock struts and dampers are capable of.

This season I'm basically going to be running Jackie's (PhD Racing) Phase 1 and 2 packages on my car with square 18x10.7 wheels and 275-35R18 200tw tires.

 

[FuzzyRev]

I’m a big advocate of the Eibach Euro Z4 Pro Kit springs.

A mild even drop to lessen the wheel gap without the slammed look.

Providing .8” on all four corners.

The ride is truly near stock with less body roll.

I am running Burger Tuning Spacers in these pics 15mm rear and 13mm front.

I have a set of those Z4 springs on order, due to ship in the next two weeks, and I plan to pair them with the Whiteline sway bar set. I don't know if anyone else has that combo, and honestly I don't see the Whitelines mentioned very much here, period. Hopefully it's a good match.

 

[kaj]

In that same vein - I would like to see what setup the Supra GT4 is using - all the literature says it has KW Suspension - which in my opinion is garbage. Whenever my OEM Dampers take a dump I'll be replacing everything with Ohlins or Penske products.

KW makes some decent stuff if you want a pony up about five figures. The stuff they make for the street, such as their V3, is garbage. It can't be tuned and hard to find anybody rebuild it. The club sport is marginally okay, in my opinion, but their motorsport stuff is not bad at all.

I track with eibach pro springs and sways.

You sir, are a brave soul.

I have a set of those Z4 springs on order, due to ship in the next two weeks, and I plan to pair them with the Whiteline sway bar set. I don't know if anyone else has that combo, and honestly I don't see the Whitelines mentioned very much here, period. Hopefully it's a good match.

Out of curiosity, what makes you want to install sway bars?

 

[razorlab]

In that same vein - I would like to see what setup the Supra GT4 is using - all the literature says it has KW Suspension - which in my opinion is garbage. Whenever my OEM Dampers take a dump I'll be replacing everything with Ohlins or Penske products.

They use the KW motorsports coilovers. Very different than consumer grade.

 

[FuzzyRev]

Out of curiosity, what makes you want to install sway bars?

It stems from my 2021, which certainly had a bit more body lean than I liked when pushing it hard through some sweeping s-curves. I don't know if pairing the bars with the springs will be too much in added roll stiffness, and make the car more twitchy and unstable at the limit, but I'm willing to give it a shot and see. At least they're two & three way adjustable front and rear, so there's a bit more room to tweak..

 

[decodeddiesel]

They use the KW motorsports coilovers. Very different than consumer grade.

Holy friggin spring rate! Look at the size of those primary springs! They look like sausages!

Vented rotors with vented hats with not 1 but 2 cooling ducts lol.

Looks like they slap those temperature witnesses stickers on anything and everything they'll stick to.

Damn Bryan, you've always got all of these great shots of the GT4!

 

[kaj]

It stems from my 2021, which certainly had a bit more body lean than I liked when pushing it hard through some sweeping s-curves. I don't know if pairing the bars with the springs will be too much in added roll stiffness, and make the car more twitchy and unstable at the limit, but I'm willing to give it a shot and see. At least they're two & three way adjustable front and rear, so there's a bit more room to tweak..

Since you were doing lowering springs, I wasn't sure if handling is what you were after. If lowering for looks then I wasn't sure why the sway bars. Gracias, for the reply.
If after performance, stock height is better than lowering springs, due to geometry.
I haven't researched sway bars with stock suspension yet, but others on this site could guide you.
The lowering springs will cause issues, I'm not sure if bars would exacerbate the problem.
Body roll isn't always a bad thing. Often, it gives the car time to load up the tires resulting in additional grip. It's usually a little better on tires too. I.E. If you had a car with zero body roll, the tires would be begging for mercy and the car would be sliding all over the place.

Sponsored