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  1. X5 F15 (2014 - 2018)
    I've been monitoring a leak around the rear differential, trying to isolate it. I originally thought it was the front seal, but now I'm not convinced; there's moisture on some tubing above the dif, three tubes. One is red, the other is blue, so I've isolated those as air for the shocks the...
  2. E46 (1999 - 2006)
    Hey Guys, I'm chasing quite a severe drivetrain slack that my manual e46 320i (215000 km) has. I'm looking at the diff and can't find any information on what an acceptable amount of backlash in the diff is. I'm assuming that the differential should have close to no backlash at all (at least...
  3. E90/E91/E92/E93 (2006 - 2013)
    I has a bad front driver's side axle, and went to replace it which looked like a super easy job. I remove the old axle in about 20 minutes which was great. Then before I put the new axle in I didn't notice that the clip ring wasn't properly seated, and when I put it into the diff it wouldn't...
  4. X3 F25 (2011 - 2017)
    BMW High Pitch Noise while driving above 20mph Hello Everyone, I hope you are well and appreciate the support. I bought this 2015 BMW X3 2.8i xDrive one month ago at a BMW dealership and have put just under 1000 miles on it. There is this high pitch noise emanating throughout the vehicle...
  5. E30 (1982 - 1993)
    My new-to-me 1987 325e (manual with optional lsd) with 50,000 miles was parked for 15 years 'til 15 months ago (November 2019). The gentleman who revived it from storage did so 100% by the book, draining, flushing and lubricating prior to moving it and turning it over. Runs like thoroughbred...
  6. E90/E91/E92/E93 (2006 - 2013)
    Hello. My BMW's front diferential died after driving 50kilometres with 18 inch wheels front and 19 inch wheels back after breaking a tire. I know i was stupid and probably broke the diferential myself. The diferential got replaced now. The left front ABS sensor got replaced too. Now the car is...
  7. X5 F15 (2014 - 2018)
    Any thoughts about if its worth changing the fluid in the rear diff? I have 83,000 miles now and just did the transmission partial fluid (4L+) and filter exchange and Transfer Case fluid drain (.5L+), fill and reset adaptations through ISTA+). Very pleased with the results. I think the TC was...
  8. X3 E83 (2004 - 2010)
    Just wondering if anyone on this forum has had the pleasure of successfully rebuilding a front differential for a 2006 e83 X3 2.5i. It looks like the input end pinion shaft bearing has failed. The input flange can be moved side to side and diff fluid has spilled out through the pinion shaft...
  9. E39 (1997 - 2003)
    Hi, my question is are the Auto differentials between the E39 525i,528i, and 530i swapable? I have a 03 530i and i blew the diff in it. I am looking a couple used ones for around $200. but the thing is they are either from a 2000-2003 525i or 528i. I just need to know if I would buy on from one...
  10. E39 (1997 - 2003)
    Hello, I'm currently swapping a 2JZ into my 1999 E39 wagon. I'll have a build thread up soon for anyone interested. I'm looking to buy an M5 LSD, and when searching many of them are for only 2000-2003 M5s. Are there any major differences? My only real concern is the subframe mounting points...
  11. E90/E91/E92/E93 (2006 - 2013)
    Hi folks, as the title states, I need to disconnect the drive shaft from the rear differential on a 2009 BMW 328i sedan, I'm towing the vehicle for like 160 miles and my mechanic advice is to disconnect the drive shaft from the rear differential to haul the car, my question is: will I need to...
  12. X3 E83 (2004 - 2010)
    I had to have the BMW Dealer replace the rear drive-axles because the reluctor rings were corroded. I looked under the car a few hundred miles after the work was done and saw oil all over the differential and underside of the car. The drive-flange had pulled out of the differential. Took it back...
  13. X3 E83 (2004 - 2010)
    Hey all, first post here. I have been reading this forum for a while, although I have not yet contributed. This x3 is my first car (after years of riding/DIYing all kinds of mopeds/small motorcycles), and I absolutely love driving it. I have been trying to figure out this issue for a while, and...
  14. E60 / E61 (2004 - 2010)
    My car is a manual and every time I load up the drive train I get a metallic ping / ring sound from the rear. Start moving in first and it is a distinct bell sound followed by a few more smaller pings. Same thing when I lift of the throttle and unload the driveshaft. Shift to second...
  15. Performance
    Hello all, I recently picked up a '04 325iT with the Steptronic. The touring was purchased from New Country Mercedes Benz in Hartford, CT; the dealer deemed it too nice for the auctions, so it underwent presale inspection and maintenance, performed by the BMW dealership owned by the same parent...
  16. General BMW Questions
    The title says it all. It was out a clutch and I replaced it and the flywheel. Afterward, I tried to drive it away but the back two wheels were going in different directions at times. I think the differential is messed up, I don’t know the last time I changed the diff fluids so I’d imagine...
  17. General BMW Questions
    I'm I'm the process of an ls swapped e46. To cut to the point, I'm lost on my diff options. I'm going to be drifting this car. Motor's just going to have a mild cam and some accessory upgrades. Shouldn't be doing anymore than 450whp. I've done My searching but everyone's opinions are different...
  18. E30 (1982 - 1993)
    Hello everyone I've been a long time reader first time poster. This place is awesome, so much knowledge being shared. I'm making the plan for the build now and while this isn't my first project car it my first bmw and I dont know if I would have been comfortable buying the car if it wasn't for...
  19. 7 Series - E38 (1995 - 2001)
    Hi all, Does any one have any links or recommendations in regards to swapping an E39 M5 LSD into a 2001 740il? Thanks!
  20. F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
    Hi Bimmer Drivers and Experts! I have a 2013 328 xDrive (Luxury Line) that needs tire replacement. (OEM Tires: 225/45R18) After searching this forum in particular, I was finally settling for 255/40R18 square setup. However, I was told that this 30mm/tire wider setup not only increases my fuel...
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