understeer how do I minimize it?

[DSP74]

I don't have a problem with droop as long as I don't leave my car in the air for too long - the konis have enough rebound stiffness to keep the springs in place until I put the car back on the ground again (it's plenty enough time to change both wheels on each side). and I can't really lower the perches in the back :p

Right. Wondered why a 6" spring was to long-but I was thinking front for some reason.:-)

[nando]

6" is too long front and rear. the ix struts are pretty well different - in order to shorten the housings, you'd need custom inserts. one guy did it, ground control did the R&D for him. No idea what that cost - I already had konis and a guy who did a fantastic job modifying the perches so I wasn't about to go down that route$$$.

I could have simply lowered the perch I guess, but it's not like there's lots of ix's running around with coilovers - I really didn't know how it was going to turn out.

[DSP74]

6" is too long front and rear. the ix struts are pretty well different - in order to shorten the housings, you'd need custom inserts. one guy did it, ground control did the R&D for him. No idea what that cost - I already had konis and a guy who did a fantastic job modifying the perches so I wasn't about to go down that route$$$.

I could have simply lowered the perch I guess, but it's not like there's lots of ix's running around with coilovers - I really didn't know how it was going to turn out.

Note to self. Nando is piloting an IX.:blowup:

[tjts1]

What will minimize understeer in an e30? I currently have h&R cup kit and stock sways. I am sure that a modification of the sways will change things, just not sure how they will on the e30. Any help is greatly appreciated. Thank you.

Get E30 M3 offset CABs. These will increase caster angle which intern increase negative camber when you turn the wheel.

[funcrew]

Post deleted - already covered better by others.

[Fidhle007]

I know there are advantages to having coilovers, that's why I have them on my car. And although I might sound like a hypocrite, I have not cornerweighted it yet but I have the capabilities to do so (just never the time.) For anyone who walks into my shop though, I will always recommend something closer to stock simply for the ease of use especially on a daily driven car. If the OP is spending a lot of time on the track and can set the car up well the coilovers would be great, but the H&R Cup Kit is very low but not that stiff so going with some Race springs would still feel like a nice upgrade for less money I think. When that gets old, sell the races and buy the coilovers but having H&R do your setup for you first always seems like a good idea to me... :D

[nando]

I think it's a waste of money - I could have been running GC all these years instead of H&Rs. I would have been fine. That's why you listen to other people who have similar setups. it's not like you're going to randomly pick springs, toss them on your car and hope for the best.

also, yes that is hypocritical. I have facilities available to me for corner weighting when I get to it, and I'm sure it will have a nice effect on my car's handling, but it's not the end of the world to not do it. like I said, you can't do anything with standard springs, so it's moot.

[DSP74]

I know there are advantages to having coilovers, that's why I have them on my car. And although I might sound like a hypocrite, I have not cornerweighted it yet but I have the capabilities to do so (just never the time.) For anyone who walks into my shop though, I will always recommend something closer to stock simply for the ease of use especially on a daily driven car. If the OP is spending a lot of time on the track and can set the car up well the coilovers would be great, but the H&R Cup Kit is very low but not that stiff so going with some Race springs would still feel like a nice upgrade for less money I think. When that gets old, sell the races and buy the coilovers but having H&R do your setup for you first always seems like a good idea to me... :D

You must be much more understanding than me. I figure if JUST HAVING the capability to change spring rates and ride height is to much, then they should just not do ANYTHING to the car. Even stock type lowering springs.:blowup:

[Fidhle007]

Income is income...

[Fidhle007]

I think it's a waste of money - I could have been running GC all these years instead of H&Rs. I would have been fine. That's why you listen to other people who have similar setups. it's not like you're going to randomly pick springs, toss them on your car and hope for the best.

also, yes that is hypocritical. I have facilities available to me for corner weighting when I get to it, and I'm sure it will have a nice effect on my car's handling, but it's not the end of the world to not do it. like I said, you can't do anything with standard springs, so it's moot.

I agree with you on all of the above actually but I was initially thinking about this question as more of a daily and less for track. Sorry if I came off as abrasive.

[Hallen]

The advantages aren't just the ability to corner weight the car. The biggest advantage is in CHOOSING what spring rate you want, AND the ability to change those spring rates easily. And if you look in the right places inexpensively

Sorry to revive an oldish thread, but the comment about easily changing spring rate with a coilover had me bothered.

What do you mean by that? I am guessing that by adjusting the ride height you in effect put a preload on the spring and therefore the spring rate?

However, the only thing that affects spring rate is diameter, the number of active coils, and the wire diameter.

With these coilover systems, can you put enough of a preload on the spring so that you get dead coils? This would raise the effective spring rate because you have effectively removed one of the coils of the spring. That seems pretty extreme though and I would have thought it wouldn't be possible to do if the springs are perfectly linear and the coil spacing is equal.

[nando]

Sorry to revive an oldish thread, but the comment about easily changing spring rate with a coilover had me bothered.

What do you mean by that? I am guessing that by adjusting the ride height you in effect put a preload on the spring and therefore the spring rate?

However, the only thing that affects spring rate is diameter, the number of active coils, and the wire diameter.

With these coilover systems, can you put enough of a preload on the spring so that you get dead coils? This would raise the effective spring rate because you have effectively removed one of the coils of the spring. That seems pretty extreme though and I would have thought it wouldn't be possible to do if the springs are perfectly linear and the coil spacing is equal.

No, it has nothing to do with loading the spring or changing the height - it has everything to do with widely available and inexpensive custom 2.5" springs. Don't like your rates? spend $60 on another set of springs and swap them out. you could even have them for different setups if you like - track/autox, street, etc.

[z31maniac]

^No it because with coilovers like GC, with 2.5" springs, you can buy replacement springs in nearly any rate/length combination you can think of and they are very affordable.

So if you discover that say a 450/550 rate doesn't work for your driving style, too bumpy for your track, don't like how it rides, you can easily and cheaply change it. And then most likely be able to sell the springs to someone else.

[nando]

if you think 450/550 are too stiff you probably don't want coilovers :p

(I know that was just an example)

[rwh11385]

pretty sure you've got that wrong, generally a bigger front will increase understeer, and a bigger rear bar will increase oversteer

pretty sure you're a naive twit...

for BMWs, a big front bar HELPs to REDUCE understeer