View Full Version : how should i set my dinan sways?
Lee in Ottawa
06-17-2005, 12:20 PM
Hey guys, what holes should i use when bolting my sways on?
Mblaster
06-17-2005, 02:55 PM
Last hole out, front and back.
bähnstormer
06-17-2005, 03:05 PM
that sets them to thier softest setting...
there are a number of guides out there
for suspension tuning, but iirc, stiffer in the
rear (inward holes) gets more oversteer
Dark Helmet
06-17-2005, 03:06 PM
full soft in front, full hard in back. rear tire inflation at about 38-40. :D:D:D:D:D
Lee in Ottawa
06-17-2005, 03:07 PM
Thanks guys, now atleast i know what hole does what :D
weaksauce
06-17-2005, 04:34 PM
Hey guys, what holes should i use when bolting my sways on?
The holes that mount them up on my car :alright
Sorry couldn't resist. I wish sways were cheaper for the E39.:(
The Beastmaster
06-17-2005, 05:39 PM
I have my rears on full soft, but it's a little sloppy. With it on full hard, it oversteered like a mother. Now I'm too lazy to move it to the middle.
Seriously, if you set the rears hard, be very careful the first time you drive in the rain. It gets much easier to get the car to snap around on you. FWIW, I have mine (Racing Dynamics) set on hard up front (two holes available) and Middle in the rear. I am told this is the "neutral" setup, but in the rain you need to keep it in mind.
thejlevie
06-17-2005, 06:38 PM
Tightening the rear sway, relative to the front, will shift weight to the front during cornering. This will help negate the built in understeer on and E39, but may introduce more oversteer than you are used to (or want). To some degree that oversteer can be tuned out by reducing rear tire pressure. And it may, on a 540, be necessary to soften the rear sway and live with some understeer.
On my 525 with the rear sway set full hard and the front full soft I have excessive oversteer with the rear tires set at recommended pressure. Reducing the rear pressures to 2psi over what I'm running in the front brought the car into nearly perfect balance and yields a nearly perfect contact patch (as determined by chalk and a tire pyrometer). A different suspension, tires, or car model (a 540 will be different!) will all affect what tire pressures you can run and where you need the sway bars set.
SoNiK 3
06-17-2005, 06:39 PM
Put one to the front and one to the back. = Neutral.
mottati
06-17-2005, 08:17 PM
sway bars will limit weight transfer side to side, they do not effect transfer from front to rear. By tightening up a rear bar (using more inboard holes) you're allowing less weight transfer to the outside tire, which effectivly decreases grip. So a tighter / thicker rear bar = less ultimate grip at the rear = more oversteer. This is why you don't necessarily want the largest/tightest bars possible. You use the bar and the adjustment to fine tune your current spring/shock combo.
There are a lot of other variables for what you might want on your car. On my M5, i have my rear bar set in the middle, stock front bar. I like it, but others say it's twitchy or has too much over steer on the track. I like being able to give the throttle a little lift and start the rear coming around for a turn however. My e34 was certainly more of an "oversteerer" than my e39, so i'd probably go conservatively soft, and experiment. Assuming you already have aftermarket springs/shocks/struts, the thicker bars will be noticable over the stock bars even on full soft, i'd imagine.
Mike
Lee in Ottawa
06-17-2005, 10:11 PM
Thanks guys you've been a great help. I'm gonna try stiff up front and medium out back and see how she drives then play with it till i get it where i feel confortable.
Now anybody know what i should adjust my adjustable links too?
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