Which Spring Company is Best?

[eacmen]

60mm ID springs maybe?

that's what i was thinking but wondering if anyone has been successful with the 60mm in applications for 2.25”

[bigjae46]

that's what i was thinking but wondering if anyone has been successful with the 60mm in applications for 2.25”

The rear would probably be fine. Not sure if the slight difference will be an issue on the front.

[Gt4]

I had always bought Hyperco springs. I was told tolerance (actual spring rate) were tighter with Hyperco vs Eibach. I think they make 2.25’’/60mm/2.5’’ springs.

[Casa de Mesa]

Another vote for Hyperco.

Hyperco is what's on my racecar. Their published spring rates always dyoned very close to actual.

[liam821]

https://www.northamericanmotoring.co...gs-dynoed.html

This is a really interesting read. Thanks for sharing. I've had all sorts of different suspension setups on my e46m3 and others, but it's hard to say Swift was better than another spring since generally, they had different dampers, so it's never an apples-to-apples comparison.

With that said, I have Swift on my e46m3 and Eibach on my race car and both do spring things. haha