last night me and my friend with a Turbo E30 were havin` a discussion about our cars.

since he was going to get a 3.21lsd he is going to get rid of his 4.1lsd.
he offered it to me. now the question is, will a Differential from an E30 fit a E34 525i with an M20 motor (same as the e30) ?

no, different cases

do u know what diffs. will fit?

i have a 1990 525i (m20 engine) with a manual transmission.

hi, new member!
im curious, does the M3 use a bigger diff. ? The 5 series?
i think im going to need a bigger diff...and axles...

hi, new member!
im curious, does the M3 use a bigger diff. ? The 5 series?
i think im going to need a bigger diff...and axles...

Which m3? Which 5 series? what are you driving? why do you think you need a bigger diff?