Just explain how the spring rate affects the camber

 

not the spring rate, but the spring height.

you're obvious smart enough, with that remark and the funny face, to know that you lower your car, you'll have negative camber, which causes the tires to tilt inward, which causes abnormal tire wear inside of the car.

I used to have -2.0 camber on front of my Evo, and tires corded out inside while I had still thread left on the outside.

"
Hopefully this is the right forum.

I recently purchased an ap1 S2K with lowered suspension. After taking the wheels off, I noticed it has Tein S springs with stock shocks. Also I noticed that the inner front tires are excessively warn.

When ever I drive over roads that are not perfect (with bumps, pot holes or major road crown) my car tends to jerk to a direction caused by the imperfection of the road.

I was wondering if this is normal for lowered cars or that is due to the tires issue. "

that's what was written, just in case you missed it trying to share your smartness with us.

 

the camber changes due to suspension travel becasue the angle of the tire rod changes. the more angle (especially on lowered cars) the more the toe in. you can do a simple calculation to see how much change there is by taking the cosine of the angle from a flat position to whatever angle it changes to: (rod lenght)Xcos(angle of change from a flat)

 

I guess I should explain myself!
My comment was asking why a Tein spring is any worse than any other!
Surely it can only have 3 relevant variables.
Height, linear vs progressive & rating.

@ plokivos - Yep I understand when you lower it without redoing the geo you get much more camber. You don't have to if you redo the geo! Your problem is probably the very high spring rate of the Tien conflicting with the OEM damper rating. Decent dampers are tuned to the srpings travel and rating.

@ jzz30 - not quite right, on the front it is determined by the arc of top and bottom wishbones which are not equal length on the rear there is also the tie bar to factor in.

I guess the point I'm making is excessive tyre wear is down to geo (assuming functional suspension)

 

I don't have tein.

I said Tein - S springs are probably the worst spring for your car out there.

There is a reason why it's so cheap. a progressive rate that's not worth a dime (Not very high rate) at super lower front and relatively lower rear, screws up all sort of suspension geometry. Unless you start messing with Active Camber settings, it's meat and potatoes as far as the stock setup is.

when you say tire wear is down to geometry of the tires, but that's only one variable of the suspension component that could cause wear and tear.

You should always lower equally front and rear and never too much unless you get adjustable lower arm, control arm, etc.

besides, what do you mean by "excessive tire wear is down to geo", "reding the geo" ?

that's very vague statement.

 

Yes.. alignment first, just trying to provide different options for the bump steer issue.

 

Thanks all for the help!

I think my long term solution is to raise the car back up to normal stock height, I have already purchased some ap2 stock suspension system and am planning to put those on sometimes in the future.

I guess I will get the new tires mounted and realign the car asap.

Thank you all!

 

Can't go wrong with the stock suspension!!! its better then most aftermarket suspensions for the s2000.

 

Are you talking about S.tech springs?

http://www.tein.com/ti/a58.html

It says 1" drop all around and about 100lbs more spring rate. That sounds pretty good.

 

Have you actually tried them yourself, are is this just a theory?