lsd (e30)

[midnight]

whats the difference in differential lock between the m3 diff and the 325i, beacause i have heard the 325 is only a 25%lock, any help much appreciated

[jmc330i]

M3 is 25% IIRC

[midnight]

so they are pretty much the same then?

[jmc330i]

Different ratios - 325i is normally 3.91lsd, theres also the 3.64.

The M3 is 3.25. (3.15 on one of the models)

[Jhonno]

Evo III thingy was 3.15

[MikeeMiracle]

The ratio is all important also, you don't wanna just look at the diff lock. My 318iS came with a 4.1 open diff, I thought I had fitted a 3.91 lsd but it turned out to be a 3.64 lsd. The longer ratio has lost a lot of performance, a second to 60mph easy. I now have tons of traction but not enough power going to the rear end to break it out easily.

[midnight]

so what diff would you reccomend, with good traction, but will break out when required>?

[MikeeMiracle]

Depends what car you have?

[maxfield]

Was 3.15 on all EVOs

[midnight]

ive got a 320iSe at the mo, but an engine transplant mite be on the cards in the future