Sway bar size

[macinnis]

I am looking at some Ireland engineering sway bars for my 90 325is. Right now the car has ge coilovers but eventually I'm changing to ground control. My question is what size sway bars will be better for auto x and daily driving? Do I need the 25/22 or 22/19?

Thanks

[jlevie]

The sway bars used are a strong function of the spring rates. 22/19mm bars work well for spring rates in 315/570 to 400/600 range. But if you get into the 600/1000 range the larger sways would be appropriate. The lower range is probably all that would be acceptable for a car driven on the street.

[macinnis]

The sway bars used are a strong function of the spring rates. 22/19mm bars work well for spring rates in 315/570 to 400/600 range. But if you get into the 600/1000 range the larger sways would be appropriate. The lower range is probably all that would be acceptable for a car driven on the street.

Since the bars are the same price, would it be a better idea just to get the larger ones? I am not sure what spring rates I'll be getting with the car yet. Sorry for the dumb questions.

[jlevie]

The answer to your question is in my post. Pick the springs, then the sways.