i have seen tons of stuff on lowering and springs and specifically some posting spring rates. What is the source of some of the numbers. In particular, some are advertized as progressive. that implies a a nonlinear spring rate like the first in is 300 lb/in but the second inch may be 330 lb/in. I alos dont see the spring "free lenth" listed. these are both impotant in calculating the drop. any takers here?

Another related issue is the Tire/Wheel weight, spring weight, the effective spring rate of the tires, and damping ratio of the shocks/struts. i dont see that info either. Any takers here?

Ok to make this more simple, has anyone changed to just a lighter wheel and tire combination to se how it affected the ride and handling. Did it matter more than having wider(heavier) tires on the back?

 

I have seen plenty of stuff on suspension and lowering but I find it lacking. I see spring rates for springs listed as progressive that should have an increasing rate. I see nothing on free length. This is important to calculate the drop.
What about the affect of wheel weight? What effect are you getting from the spring rate of the tire and damping ratio of the strut or shock.
What about lightweight wheel/tire effect on handling? It changes the resonant frequency along with spring weight, spring rate, and damping ratio? Lighter wheels/tires also reduce the energy required to accelerate and brake the wheel itself.

 

i think i put this up but it doesnt show up. did i do it wrong?

 

Quick question: The z tube that i bought does not have a bracket attached to it. I just finish installing my z tube and realized that there is no bracket holding the tube in place, is that ok? I have an 05 sedan.

Thanks

 

^You've done something wrong, I'm just not sure what

A couple members were really particular about wheel and tire weight. Don't remember how many have sold their cars though, I know some have.

OCG35 still has his, and he's a stickler for wheel weight.

 

what rims can i get for like 600$ bucks? i know xxr's 521 are around that price .
any other options?

 

^I got my Privat Gassens for under $500, but they were on closeout.
There's another XXR that's priced like that, can't remember the name of it.

You could pick up a few different OEM wheels for that (such as 19" Rays)

 

really need some wheel help, 19x8.5 +40 and 19x9.5 +45 all with 245/35 will i be able to use them?

 

^They're gonna be hellaSunk

 

any way of making them work? great deal on some axis pentas? maybe some spacers?

 

^Yeah, you could fix a lot of it with spacers.

 

^ Double stack em! Thats safe! lol

 

so not really worth it then?

 

That would depend.
What wheels are they? Are they in good condition? How good of a deal?

 

axis penta 19's with 245/35 all around just missing one tire...can pick them up for 1000...good condition