bilstein shocks or original

[Robbks]

you could probably also mix and match the rear springs to suit aswell
putting wagon springs in the sedan will help to lift the back end aswell as provide a different handling balance towards oversteer

[teK--]

Yep the Americans often buy the Wagon rear springs to do this, or they install "saggy butt" shims on top of the strut mount including extended studs.

[smythie]

you could probably also mix and match the rear springs to suit aswell
putting wagon springs in the sedan will help to lift the back end aswell as provide a different handling balance towards oversteer

Just be aware that the Gen4 is prone to snap lift off oversteer as stock. Further moving the balance towards oversteer is just asking for trouble. You then need to accept that you are making it more risky near the on-road limit and if anything have reduced its handling potential because of the lower rear end grip limit.

Of course if your name is Cody Crocker or Simon Evans, don't worry about it.

[Robbks]

My legacy needed 7mm saggy butt spacers for the STi struts

Just be aware that the Gen4 is prone to snap lift off oversteer as stock.

auto, manual, sedan, wagon, specB, TB-STi?
so many combo's that's going to affect handling balance

[teK--]

you could probably also mix and match the rear springs to suit aswell
putting wagon springs in the sedan will help to lift the back end aswell as provide a different handling balance towards oversteer

Just be aware that the Gen4 is prone to snap lift off oversteer as stock. Further moving the balance towards oversteer is just asking for trouble. You then need to accept that you are making it more risky near the on-road limit and if anything have reduced its handling potential because of the lower rear end grip limit.

Of course if your name is Cody Crocker or Simon Evans, don't worry about it.

No one is suggesting lifting the back higher than the original F:R ratio. It would be to address saggy butt only.

[garbo41610]

You then need to accept that you are making it more risky near the on-road limit and if anything have reduced its handling potential because of the lower rear end grip limit.

Problem Solved!

[Robbks]

bahahahahahaha!
Sik Bro!

[[[d a n n y]]]

how does the billy's compare to the standard KYB's ?
ride quality and performance wise?

[garbo41610]

Much better. They are a touch firmer obvioiusly but by no means harsh at all.

[kiks]

you could probably also mix and match the rear springs to suit aswell
putting wagon springs in the sedan will help to lift the back end aswell as provide a different handling balance towards oversteer

Just be aware that the Gen4 is prone to snap lift off oversteer as stock. Further moving the balance towards oversteer is just asking for trouble. You then need to accept that you are making it more risky near the on-road limit and if anything have reduced its handling potential because of the lower rear end grip limit.

Of course if your name is Cody Crocker or Simon Evans, don't worry about it.

No one is suggesting lifting the back higher than the original F:R ratio. It would be to address saggy butt only.

Actually doing this is probably the best handling improvement ever. Factory roll centre is too low. Ive lowered my entire sub frame 15mm to raise it up whilst keeping the car at max ride height on the ohlins with the lower clevis at safe berry. Result is power on oversteer and neutral trail braking turn in with no body roll in the rear with far less dynamic camber on bound. baller dawg.

[Q]

Q: on that theory, the rear would also sit higher.. would it not?

The fronts are a much bigger unit and have alot more pressure than the rears.

absolute twaddle.

size of the unit is irrelevant.
the rears are a completely different suspension principle as compared with the McPherson Struts in the front
the rears only need to worry about damping and holding the spring.
the fronts are an integral supporting (load bearing) part of the front suspension system responsible for holding the hubs to the car.
the rear has multi-link arms to do that.

I would probably agree that the billies DO give more clearance for wider wheels
this has usually been the case since the gen2 GTB's were released.
they have much more clearance from tyre to strut than the stock, GT or AUDM RX/GX struts
the spring perch is a different shape all together and may indeed be slightly higher,


so far no-one has shown before and after pics of this height difference (in this thread) to support claims one way or another

so post them up people

What's twaddle?? The front stuts are not alot bigger? Or they don't have more pressure than the rears?

Just put a set of bilsteins beside a set of KYB struts I had in the garage and there is a 10mm perch height difference but this alone doesn't explain the difference in height I experienced when I changed them over.

Also the spring perch shape is exactly the same...

[teK--]

you could probably also mix and match the rear springs to suit aswell
putting wagon springs in the sedan will help to lift the back end aswell as provide a different handling balance towards oversteer

Just be aware that the Gen4 is prone to snap lift off oversteer as stock. Further moving the balance towards oversteer is just asking for trouble. You then need to accept that you are making it more risky near the on-road limit and if anything have reduced its handling potential because of the lower rear end grip limit.

Of course if your name is Cody Crocker or Simon Evans, don't worry about it.

No one else on here seems to complain about this snap lift off oversteer yet you've mentioned it on probably 4 or 5 different threads. I wonder if it's a chararacteristic of stock RB suspension?

[Robbks]

What's twaddle?? Or they don't have more pressure than the rears?

The rears would have more pressure than fronts.
higher spring rates.

but the difference in increased pressure from the KYB's to the Billies would be proportionally the same front and rear.
otherwise increasing damping at one end and not the other would change the handling balance of the vehicle.
if anything the Billies would be proportionally "stiffer" in the rear to dial out understeer for a sportier feel.

this may be where the "lift-off oversteer", that Smythie mentions, is induced.

[LibertyGT2]

I have a MY04 GT and the rear springs started to sag. I installed the Billies and the front came up about 10mm (compared to the standard springs) with minimal rise in the rear.

I had a custom set of variable rate spring made through KMac springs in Rockdale to balance the height, I was happy with the height and was well within the OEM specs.

I often have kids in the car and as it goes offroad to the family farm on regular trips, I didn't want it lower as the rear would sometimes hit in adverse conditions.

Custom springs are a good option IF you know what you want. Took them 48 hours to have the springs ready. Took the car in, told him what I wanted and I got it.

[Q]

What's twaddle?? Or they don't have more pressure than the rears?

The rears would have more pressure than fronts.
higher spring rates.

I never mentioned springs, only talked about the internal pressure in the Bilstein struts.....