XT_for_me wrote:If you lower the car much beyond standard height you will lower the roll center a bit to much and induce some understeer, however Whiteline have a kit for roll center correction. When talking spring rates the Lib will perform best running the same rates front and rear. This is because the rear suspension offers a leverage to the actual spring rate so the effective rate at the rear wheel is lower than the actual spring value. I'd suggest 8kg/mm for front and rear.
I can't offer a lot of information about wheel clearance, but you can play with this:
http://www.rimsntires.com/specs.jsp
So far wrong it is not even funny, and obvious of someone who has never tested much, and is trying to flog chinabay shit to people.
If you did even a few hours of research, let alone development and testing on a gen 3 or gen4 liberty you would know how utterly shit they handle with 8kg springs in the front, let alone both front and rear.
For what its worth, using the best bolt on coilovers money can buy (without going to a specialised setup until early next year with DMS 50 gravels), and spending a shitload of time rearranging the rear end of my car and making the front end actually strong enough to bother even measuring differences the absolute fastest I can get it is with 6.9kg front springs and 9.7kg rears now. And that is in a 3.0RB wagon. Let alone a 4cyl lib where I'd happily imagine closer to 6.5kg and and 8 to 8.5 kg in the rear would be suitable with properly valved shocks.
As for the OEM bilsteins, with gen4 billies in a gen3, using 5kg fronts and about 6.5kg rears and althrough the rear is slightly oversprung for the shock, it is infinitely better than sti pink rears and fronts, etc. The rear shock oscillates a little when its not loaded, but thats not so much of an issue if you are smooth on the thing. Jumping wildly from left to right whilst stomping on the brakes like its gran turismo means you end up facing backwards. But when driven smoothly its so much quicker than having equal spring rates that allow the rear to pitch around and unweight the inside tyre too much etc.
8kg fronts in a 4cyl liberty would result in longer stopping distances, nearly no squat and the dynamic toe in that fairly much is what makes these things not plough off into the trees, and god knows how bad the traction loss would be on a normal australian road when trying to get power down.
And that's not even taking into consideration that at 8kg, lowered a little, the roll centre in the rear is somewhere below ground level by a good 3 inches, and in the front is fixable with a little kit from whiteline etc that then makes you know how bad bump steer can be, and with such a stiff spring fairly much negates any anti roll bar you have on the stock mounts.
Sorry to say, but spinning bullshit without even considering talking to people who have spent considerable time and money in making a gen4 handle is unprofessional. All of this is still with the horrible factory diff, no front lsd (lol 8kg springs and no lsd), and viscous rear that at the best of times makes the car a dog to drive near the limit and downright dangerous in the wet with power if you dont know what's about to happen (let alone with NO suspension compliance at all). There is a reason I have a box of various differentials, control arms, lateral links, driveshaft lengths, subframe arrangement, subframe spacers, tie rod end lengths, many many sets of 2.5id 8" linear and non linear springs, etc etc at home and thats because as a consumer, I want the best. Since people take the low road and offer cheap garbage thai crap, 14pot brakes, and dozens of other untested shit, means I need to spend the money to work out what works best and thus share that knowledge happily with anyone that will listen, as I have no vested interest in keeping it secret as a business. The only thing I ever do is mention the business names of people who help me source gear, so they can maybe get some business from it.
The worst thing is when they try and offer that shit to a consumer and palm it off, and the customer then wonders 'wtf' as the stock suspension that subaru spent millions designing outperformed it and they realised they've gone backwards, but are now hectic low fully sick.
*rant off. Im out.
