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Old 08-12-2011, 03:16 PM   #1
peytonracer4
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How do I make my car feel tighter? Handle better?

I'm asking because my dad recently got a 97 z3. It feels so tight! When you steer it goes no questions asked. Everything on it is oem or original as far as I know. The weight of the z3 isn't that much less than my 328.
So how do I make it feel this way? My car compared feels like a dog in the corners. And I have recently upgraded the suspension.
Thanks
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Old 08-12-2011, 03:17 PM   #2
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Probably you have to replace your steering column knuckle and it might be that your power steering system is overboosted. (forgot which years/models have that)
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Old 08-12-2011, 03:19 PM   #3
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Old 08-12-2011, 03:44 PM   #4
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Old 08-12-2011, 03:44 PM   #5
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Mine is before the over boosted steering.
And I already tried the shrinking cream. Didn't work :/
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Old 08-12-2011, 03:48 PM   #6
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Originally Posted by peytonracer4 View Post
..........And I have recently upgraded the suspension.
Thanks

What exactly does this mean / what did you change ?
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Old 08-12-2011, 03:49 PM   #7
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Just ask the car nicely, i'm sure you'll get a positive response.
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Old 08-12-2011, 03:55 PM   #8
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What exactly does this mean / what did you change ?
Koni yellow sport shocks and h&r springs.
The control arms have been replaced at some point in the cars life and are good. And the fcabs aren't bad. Not new. But aren't bad.
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Old 08-12-2011, 04:01 PM   #9
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H&R Sport or Race ?

Do you have your alignment sheet handy, need to know your numbers.

Tires: What are they / size / pressure you run ?

Sway bars: Stock or after market ?
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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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Old 08-12-2011, 04:03 PM   #10
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I hope you didn't mention any of this to your dad already, coz then my plan won't work.

After driving your dad's car, you tell him what a POS it is, and that since he was so nice to have 'helped' you get your car, you want to let him drive the heavier, safer, awesomer 328 of yours.

He'll get it fixed up fine for you. Then, sometime after that, you say, "wow, Dad, your car gets up to 128 mph, it's awesome!" He'll give you your POS back, all restored, and take his go-kart back.

Maybe it has something to do with the parts you used? You know I regard OE parts as holy things. You did pray to your BMW shrine first, asking the Great Roundel for guidance on parts' choices first, right?
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Old 08-12-2011, 04:32 PM   #11
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You won't be able to match how quickly the car resonds to steering wheel movement because the Z3 has a quicker ratio steering rack and a shorter wheelbase. That said you can improve the handling by upgrading the sway bars. I have Dinan stage II suspension on my 01 330ci and it handles much closer to the 01 Z3 3.0 that I had several years ago than it did when it had stock sport suspension. I did the sway bars first and that made a huge difference in how well the car feels in the corners on a twisty mountain road.
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Old 08-12-2011, 04:45 PM   #12
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poly front an rear control arm bushing and sway bars
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Old 08-12-2011, 04:48 PM   #13
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Quote:
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You won't be able to match how quickly the car resonds to steering wheel movement because the Z3 has a quicker ratio steering rack and a shorter wheelbase. That said you can improve the handling by upgrading the sway bars. I have Dinan stage II suspension on my 01 330ci and it handles much closer to the 01 Z3 3.0 that I had several years ago than it did when it had stock sport suspension. I did the sway bars first and that made a huge difference in how well the car feels in the corners on a twisty mountain road.
I agree with what this guy said.
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Old 08-12-2011, 05:39 PM   #14
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H&R Sport or Race ?

Do you have your alignment sheet handy, need to know your numbers.

Tires: What are they / size / pressure you run ?

Sway bars: Stock or after market ?
H&r sport for sport suspension and race for non sport suspension are the same thing. That's what I have.
I dint have my alignment sheet with me because I'm at work, but my alignment is within spec for my car. Nothing special. My tires are 225/40/17 I believe running at the pressure spec on the door.

And stock sport sway bars for preface lift which are the same as the zhp I believe.
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Old 08-12-2011, 06:07 PM   #15
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Quote:
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You did pray to your BMW shrine first, asking the Great Roundel for guidance on parts' choices first, right?


Doug you're going in my sig
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Old 08-12-2011, 07:06 PM   #16
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Get a younger one works for most things....hahaha
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Old 08-12-2011, 08:41 PM   #17
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If you haven't replaced LCA/FCAB's, and RTAB's they drive like a bucket of
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Old 08-13-2011, 12:29 AM   #18
Rob43
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Quote:
Originally Posted by peytonracer4 View Post
H&r sport for sport suspension and race for non sport suspension are the same thing. That's what I have.
I dint have my alignment sheet with me because I'm at work, but my alignment is within spec for my car. Nothing special. My tires are 225/40/17 I believe running at the pressure spec on the door.

And stock sport sway bars for preface lift which are the same as the zhp I believe.

NO, they are not. Below is directly from H&R.


"H&R Sport Springs

Lowers 1.5 - 1.8" on average
Superb ride quality

Sport Spring kits are H&R's number one selling product. Enhance the look of your vehicle with a reduced fender well gap. H&R Sport Springs lower the vehicle center of gravity and reduce body roll for better handling. The progressive spring rate design provides superb ride quality and comfort. A lower wind resistance signature will make the vehicle more streamlined and improve gas mileage. If you are only looking to improve one part of your vehicle's suspension, you cannot go wrong with installing Sport Springs. Fun to drive, H&R Sport Springs are the number one upgrade for your vehicle."

"H&R Race Springs

Lowers 1.75 - 2.5" on average
Designed for responsive, tight handling and performance

H&R Race Springs are designed for high performance drivers who want the most out of their vehicles. When the need for uncompromised handling performance becomes a priority, H&R Race Springs will provide over-the-top race ready performance and appearance. They help balance vehicle weight for improved performance and control, while lowering the center of gravity. Expect a reduced roll center and reduced body roll from H&R Race Springs."


The first thing I'd try to do would be to go from stock camber settings to more front & rear neg. camber. There are many ways to do this, but It would be cheaper to sell your current H&R Sport springs, and buy a set of H&R Race springs. I know from first hand experience that you'll end up with about F 2.2 and R 1.9 neg. camber, these are very good street numbers for great handling. (if you have stock alignment numbers, you're on sport springs)

Next, you can either purchase better sway bars, or for real cheap you can purchase Powerflex urethane bushings for your stock front & rear bars. Not as good as buying new bars but definitely an improvement over stock, makes em more effective.

Last, tires. I'd recommend TOYO RA-1 235/40-17 8/32" new (street legal race tires), all the grip you
could want/excellent in the wet. The trade off is they'll only last 15K to 20K miles. PSI, 38 to 40.
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Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!

Last edited by Rob43; 08-13-2011 at 12:38 AM.
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Old 08-13-2011, 12:37 AM   #19
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Rob43,

You recommend 38-40 PSI on all four, even though the door jam has the fronts listed a bit lower PSI than rear?
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Old 08-13-2011, 12:42 AM   #20
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NO, they are not. Below is directly from H&R.
actually they are. i don't understand why they do this but the part numbers are exactly the same. in the attached image you'll see that race springs for non sport suspension and sport springs for sport suspension are the same part number: #29484
so you "could" say i have race springs.

either way, thanks for your other suggestions.
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