For those with super aggressive stance setups...increase preload?

[fliplyricist1]

Just curious, would increasing preload for those with setups that rub white a bit due to a lot of suspension travel... help much?

Or is increasing preload by say....half an inch really asking for problems? Is it pretty much a lost cause where you just need to look at getting a stiffer spring setup, or just raise the car up? Raising the car up is really my last resort...but seems like my suspension has so much travel that my rim lips are tucking even at the slightest of dips *7k rear spring rates, full stiffness setting, and about 1.3" of tire [email protected]

Thanks

[xs042lol]

on my stances, i have some preload only because it doesnt go low enough for me to tuck tires with all collars on, so i put preload. i have full stiffness and its fine for me. what are you rubbing? have you hammered the metal lip in? if your rubbing anything else, just hammer. i was rubbing the inner fender, couldnt do much about it so now im just going to undercoat it so it wont rust. Get stiffer springs i would say, or honestly. raise it slightly. function > form is the new hype. why fuck shit up just to look cool? your paying in the end - no pun intended lol

[fliplyricist1]

^^ really appreciate the reply man....I believe its rubbing just a slight part of the inner fender, starting when the suspension compresses about an inch then just gets progressively worse from there (as the rim lip starts to approach the fender). I've already hammered out as much as I could...I suppose a pull is the last resort, but I really dont want to mess up the fender reflections or paint any more than I already have.

Here's the real kicker though: i'm only rubbing in the rear...AND...the rubbing gets very bad during big turns, most especially. Example: I make a hard right turn and the left tire rubs hard...make a hard left turn and the right tire rubs hard. I was always under the impression that rear suspensions weren't susceptible to toe-in and toe-out during compression like front suspensions? I'm maxxed out at about -4.8 camber on both sides. It's boggling me...or is that just a natural function of counter-weighting and coilover physics?

You're right...I may have to just raise it up another half inch or so...damnit...but I suppose raising it another half inch and not messing with the preload will just make it sag at the current static drop anyways once there's me inside and passengers. Thanks again

[Slidin' Sam]

stiffer springs and raise it slightly. do not add a bunch of pre-load, it will induce wheel hop, which is no good!

[fliplyricist1]

^^ thanks...how much preload is 'too much', persay? Would raising the preload the exact amount (let's say 0.30") of the driver'sweight-induced natural sag have any major negative consequences?

[sirfallsalot243]

Roll/pull. Different size tire.

[wh0aitznic0]

Do a slight newspaper pull in the rear. That little bit could mean the difference between chewing up your tires and being hellaflush, y0.

[ZX88]

hammer the inside get a smaller tire.

[g_mac530]

I would make other adjustments first before you start messin around with the pre-load. And if you must adjust preload, take it to an alignment shop. Don't just jack up the preload on your own. I did that on my own car because it was sitting too low and when I brought it in for an alignment, the shop took all the preload off the spring that I put on and the car rode MUCH smoother.

[fliplyricist1]

thanks guys...I guess I won't mess with the preload...was debating increasing preload by just .20 inches or so but that really won't make much of a difference. ill try the newspaper pull and see if that doesnt help out...else I'll just raise her up another finger or so

thanks

[E-Warrior]

I have a question.

I have HKS Hipermax RS coils with 7kg/5kg spring rates. Is it ok if I just replace the springs with say some Swift 10kg/8kg???? Because As my car sits on a flat surface my tires are about 1/4-1/2" away from my QP even though they are pulled.

Im sure you can imagine what turning on a 5kg spring is like with that little space between tire and metal....sssssccrrraaaaapppppeeeeee lol

[fliplyricist1]

^^ I was wondering this as well...ideally I'd like to cop some 12/9 spring replacements for my d2's or something around there...but not sure if the struts are already pre-valved for the specific springrates when they're made from the factory?

[!Zar!]

Do a slight newspaper pull in the rear. That little bit could mean the difference between chewing up your tires and being hellaflush, y0.

Not having rolled fenders will chew up tires. Pulling the fender with newspaper is for small amounts of clearance.

[fliprayzin240sx]

^^ I was wondering this as well...ideally I'd like to cop some 12/9 spring replacements for my d2's or something around there...but not sure if the struts are already pre-valved for the specific springrates when they're made from the factory?

All depend on the company. Almost all the cheap companies have 1 strut for 2 or 3 different spring rate which is never good. Struts are always valved for a specific spring rates. You can kinda make up for it adjusting the dampening but thats not a fix and only bandaids the problem.

[fliplyricist1]

^^ gracias

well today, I tried messing with the preload despite the heeded warnings, and....I fixed the rubbing issue 90 percent! I preloaded both the rears by about a little less than a finger (perhaps about .5" or so, or 6 or 7 threads)...and wow, the car literally feels like a go-kart out back now. Previously I had all 4 corners set to full stiff dampening, but after raising the preload, it feels completely different now. I offset the car's rear ride height being raised by the preload by lowering it about 4 threads via the traditional lower ring. So essentially I pretty much retained the same ride height but now I only rub going up extreme inclines, where my rim lip gets compressed to just under the fender. Else, my issue of it rubbing hard on each side when simply turning or hitting a tiny bump has been completely eliminated. Thank god.

Just thought I'd share.

[xs042lol]

^^ really appreciate the reply man....I believe its rubbing just a slight part of the inner fender, starting when the suspension compresses about an inch then just gets progressively worse from there (as the rim lip starts to approach the fender). I've already hammered out as much as I could...I suppose a pull is the last resort, but I really dont want to mess up the fender reflections or paint any more than I already have.

Here's the real kicker though: i'm only rubbing in the rear...AND...the rubbing gets very bad during big turns, most especially. Example: I make a hard right turn and the left tire rubs hard...make a hard left turn and the right tire rubs hard. I was always under the impression that rear suspensions weren't susceptible to toe-in and toe-out during compression like front suspensions? I'm maxxed out at about -4.8 camber on both sides. It's boggling me...or is that just a natural function of counter-weighting and coilover physics?

You're right...I may have to just raise it up another half inch or so...damnit...but I suppose raising it another half inch and not messing with the preload will just make it sag at the current static drop anyways once there's me inside and passengers. Thanks again

no problem man. I see you figured it out, nice!

sorry this this late reply, i been busy

Good work, now for me i just got to hammer more and fix my preload. i have an unknown amount of preload lol, i just kept adding until my stances were low to tuck tires >.<

[Def]

Preload does not give you a stiffer spring, only trading droop travel for slightly shortening the total spring length when there is no suspension load on it.

[energ]

^^ really appreciate the reply man....I believe its rubbing just a slight part of the inner fender, starting when the suspension compresses about an inch then just gets progressively worse from there (as the rim lip starts to approach the fender). I've already hammered out as much as I could...I suppose a pull is the last resort, but I really dont want to mess up the fender reflections or paint any more than I already have.

Here's the real kicker though: i'm only rubbing in the rear...AND...the rubbing gets very bad during big turns, most especially. Example: I make a hard right turn and the left tire rubs hard...make a hard left turn and the right tire rubs hard. I was always under the impression that rear suspensions weren't susceptible to toe-in and toe-out during compression like front suspensions? I'm maxxed out at about -4.8 camber on both sides. It's boggling me...or is that just a natural function of counter-weighting and coilover physics?

You're right...I may have to just raise it up another half inch or so...damnit...but I suppose raising it another half inch and not messing with the preload will just make it sag at the current static drop anyways once there's me inside and passengers. Thanks again

your getting flex from all your bushings on the longer/harder turns, has almost nothing to do with your spring rates, the springs will allow the tire to move up and down, the movement causing your rubbing problem is an outward movement of the top of the tire

if you dont already have suspension links with aluminum bushings, that would be the first thing to replace (RUCAs, toe rods, and traction rods) if you have those, the next thing causing your flexing will be the rubber bushings in the rear knuckles, i would go with aluminum bushings personally, but you could buy a poly bushing set