nyceric03

So my diff on my 530i automatic is bad...at 67k miles but anyways anyone know if I can swap to another diff that'll give me more power (torque)? I heard if I swap to a diff with a higher gear ratio itll give me a higher % of torque? Thanks

525iEnjoy

Jim Blanton is a bmw guru..He has a lot off options its pricey but LSD baby. Its on my list. Gogle his name

nyceric03

LSD $$$ lol well as a cheaper alternative do you think a diff from a 525 would help?

nyceric03

http://www.teammfactory.com/gearcalc...ission+1+%26+2

Would this mean slightly faster acceleration? 330ia diff / 325ia diff

nyceric03

http://www.teammfactory.com/gearcalc...ission+1+%26+2

3.73 for the 525i diff and 3.46 for the 530i diff, so if im reading this right there is a good difference?

EeeeSixtay

I can't open that link on my iPhone, but in my opinion, there is enough difference between 3.46 & 3.73 for you feel the difference. 3.73s will feel quicker when accelerating, but the car will be turning more RPMs at cruising speed.

Ricapar

Out of curiosity - what happened with your diff?

AlexFW

Consequence of the "lifetime oil"?
I replaced the diff oil twice in 55k miles.

micloi

Quaife LSD?

nyceric03

Thanks for the boost of confidence I'll probably go that route, too bad theres no 3.91 or 4.10's for cheap lol

It makes a loud clunking/whining noise, I still have it on the car though till I get a new rear diff, its been less loud lately though

Most probably lol sigh

Too pricey for me atm