I wonder how sway bars fatigue over time. ;)


:popcorn:.

You called?

Bumping this from the dead.

I run in street class autocross and will have 225/45/17 RT660's. I've run the car two years on the stock front swaybar with A052's.

Would the Perrin 19mm which is 25-72% stiffer than stock, or 22mm which is 130-218% stiffer work better with the Sachs dampers?

I'm trying to keep the limited camber we can get in check while limiting body roll, but not go too stiff that it understeers a ton.

Was tryna achieve the same thing, I ultimately went with Eibach front and rear sways, something like 150% stiffer front and rear with front set to softer and rear set to stiffer setting. Big improvement/reduction in mid-corner understeer at the track. I'm on compromise street/track springs at 4.5kg/mm front, 5.3 kg/mm rear Swift SpecR springs, car lowered ~30mm, with Bilstein B8s.

I was wary of understeer just going with a front bar, glad I went this route.

scca street class autox only allows one bar change, iirc the strano bar was 19mm which leads me to think that the 22mm would be overkill given how soft the rest of the system is.

Or spend $$$ on Karcepts.

I have a DS build using a Superpro 22mm FSB. I accidentally ordered the wrong bar because I thought the Superpro was hollow but ended up with a solid bar.

Ran it last year on the track and autocross at full stiff and would definitely recommend running any 22mm solid bar on soft. I was experiencing a lot of mid-corner push on the track. It's bad enough that I sometimes feel it on the street during low grip situations (i.e. rain/snow).