E92 M3 Springs on E82 135?

[PcarDefector]

Anyone know if springs for the E92 M3 will work on the 135i? And have a guess on what drop would be?

I'm looking at using the Swift Spec R (M3 E92) springs as they have the highest spring rate for stock shock mount setups. I'm running Bilstein B8 with BMWPS T2/T3 springs (about 160F/420R lbs). For budget reasons, I'm trying to avoid upgrading to Coilovers as the Spec R will increase stiffness to 285F/684R lbs).

Failing that I'll use the standard E92 Spec R springs for 228F/627R lbs. There's a thread in this forum that states E9X springs fit the E82.
https://www.1addicts.com/forums/show...ht=e90+springs

[MightyMouseTech]

The M3/1M front springs are quite different, as the upper mounts are very different.

[PcarDefector]

Originally Posted by MightyMouseTech

The M3/1M front springs are quite different, as the upper mounts are very different.

Thanks MMT, you're always a wealth of information!

[Brian_]

Originally Posted by PcarDefector

Anyone know if springs for the E92 M3 will work on the 135i? And have a guess on what drop would be?

I'm looking at using the Swift Spec R (M3 E92) springs as they have the highest spring rate for stock shock mount setups. I'm running Bilstein B8 with BMWPS T2/T3 springs (about 160F/420R lbs). For budget reasons, I'm trying to avoid upgrading to Coilovers as the Spec R will increase stiffness to 285F/684R lbs).

Failing that I'll use the standard E92 Spec R springs for 228F/627R lbs. There's a thread in this forum that states E9X springs fit the E82.
https://www.1addicts.com/forums/show...ht=e90+springs

Did you end up running these E92 Spec-R springs on your E82? Any feedback on how they worked out?