anti-sway bars on 1991 318i

[freeride53]

hey guys,

i was wondering what size sway bars (if any) came stock on the 1991 318i sedan. reason as to why i am asking this is because i seek to improve the handling of my car, and to get rid of the pesky body roll.

please bare with me as i do not have my car in front of me (its at the other side of the state) and i never really went into the suspension, other than replacing the springs, struts, and brakes with the help of my friends several years ago. i also never have really gotten the chance to get the car all the way up in the air.

any help appreciated.

[ELVA164]

20mm front bar: http://www.realoem.com/bmw/showparts...41&hg=31&fg=10

12mm rear bar:http://www.realoem.com/bmw/showparts...79&hg=33&fg=45

*The diameter of the rear bar would be 14.5mm if the car has the Mtech suspension package.

[freeride53]

Wow, great information sir - thanks!

Looks like I'll be upgrading the front to 25mm, as I already have a 20mm unit.
Would you think that the 14.5mm (+2.5mm upgrade in thickness) would be noticeable?

[R3Z3N]

Why do you want a 25mm front bar? IMO that is much too large unless it is a dedicated track car and you know what you want the car to do. Arbitrarily changing bars is silly, however fun it is.

Going to a bigger bar gives less bump compliance, generally loses traction at that end of the car, makes that end easier to reel in when losing traction or sliding, but will give on smooth surfaces and with the correct springs/dampeners less roll. In a way you want to match the roll with your spring/dampener rates. The art of suspension tuning is alot of geometry, math, science and black magic with some prayers to the instructor gods.

[FLG]

Not to mention if you go any larger then stock front or rear you'll need to weld on reinforcement plates and use the trunk area reinforcement brackets for the rear bar.

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