What's The Sweet Spot For Ride Height?

[MrStabby]

I put some height adjustable suspension in my car on the weekend. The old suspension was low - 330mm at the front. I'm now thinking 340 front, 330 rear. What are you guys running? The car sees a bit of track and already has plenty of adjustable arms/bushes to get the geometry right.

[SLAPS]

Have a look at the roll centre.

With the GTST I find if I go any lower than ~345-350mm it looks as if the lower control arms start to level with the cross member (up front) and then if I push it to 340mm the cross member is noticably lower than the lower control arms.

Dare say its approximately the same with the R32 GTR.

I've got the front of mine at 345 and rear at 350 as when the rear is slightly lower it tends to understeer and simply feels a little nicer with it sitting just that little bit higher.

From what I've been told don't go too low as it messes with the roll centre.

Edited March 16, 2009 by TheRogue

[MrStabby]

My understanding is that the rear should be 10mm lower; See Here;

"Rake angle (or front to rear balance) plays a huge part in how the GT-R corners. Lowering overall by 1" as you say is OK, but you must make sure you keep the front (as measured from the centre of the wheel to the arch) is around 10mm higher than the rear. If you have a neutral (or worse rear elevated) rake the car will understeer like a bitch.

"

And IIRC SK used to quote a 10mm difference. Sort of makes sense as you'd expect the front wheel arches to be cut higher in the guard to give more clearance to the wheels that steer....

[Tektrader69]

Many people forget that as the lower cross member lowers it can badly affect the rear tow and cause a raft of issues.

At stock height for example. If the wheel raises or lowers the rear tow could for example change by 1 degree in and out as the wheel rises and falls.

If you lower the car to extremes you will probably get assymetrical tow changes causing crappy bump steer performance.

The best way to lower the car without causing this is, lower suspension arms like the Ikeya items which lower the bottom ball joint leaving the suspension geometry as per stock

[Waza_GTR]

My understanding is that the rear should be 10mm lower; See Here;

"Rake angle (or front to rear balance) plays a huge part in how the GT-R corners. Lowering overall by 1" as you say is OK, but you must make sure you keep the front (as measured from the centre of the wheel to the arch) is around 10mm higher than the rear. If you have a neutral (or worse rear elevated) rake the car will understeer like a bitch.

"

And IIRC SK used to quote a 10mm difference. Sort of makes sense as you'd expect the front wheel arches to be cut higher in the guard to give more clearance to the wheels that steer....

Front 355

Rear 345

Try and get about 6 to 6.5 front caster

[ISC-Performance]

As above, F-355/R-345. Car = R32 GTR.

Ryan

[Hibino]

What about for R32 GTST? The same?

[pipster11]

where are these measurements between?

[MrStabby]

Wheel center to top of guard

[pipster11]

bump

what is the best height for an r32 gtst

thank you