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  1. BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
    I'm wondering if anyone knows if there are any physical differences with the 645 diff's for manual and auto cars. I have looked up the part number via my VIN (Manual 645) and get 3310 7525199 with a 3.46 ratio, now the automatic diff comes up as the same ratio 3.46 but a part number of 3310...
  2. General BMW Discussions
    Hi folks - been around lurking for years - and only do I feel the need to ask a question to all those in the know. My vehicle is a X5 E53 3.0d ( 2006) but the question is related to rear diffs on the whole. Im getting a weird vibration / throbbing /juddering at any speed although the faster -...
  3. Technical Guides for the BMW X Series
    I’ve fully stripped mine because the pinion bearings have gone ! In trying to source a complete bearing and seal kit for it, would anyone have any setup info for when I rebuild it ? Pinion preload / endfloat etc ? Sent from my iPhone using Tapatalk
  4. BMW 3 Series Forum - Technical Talk on the BMW E21
    I have a welded diff in my e36 323i 1996. I'd like to do some track days as well as drift days so will be buying an m3 lsd. will any e36 m3 diff just bolt straight up? I don't have a great deal of knowledge with bmw's so how can I tell if I have a large case, medium case etc. cheers
  5. BMW 3 Series Forum - Technical Talk on the BMW E46
    Hi I am looking for a replacement rear diff for my 2002 320td Compact Manual and i was just wondering if all 320td rear diffs with a gear ratio of 2.35 will fit as there are a fair few around for the saloon and tourer but not the compact. Any help would be appreciated. Thanks
  6. BMW 3 Series Forum - Technical Talk on the BMW E21
    What size diffs do compacts have I have a e36 188 LSD and want to fit it to a compact can this be done?
  7. General BMW Discussions
    Hi folks As title really what's the difference between e36 and e46 diffs been offered a e46 diff as a spare just need to know wether it will mount the same and if the ratios are close thanks in advance
  8. General BMW Discussions
    I asked this question on the drifting section but nobody wanted to answer, I am posting it here in the general section under the heading of legality and safety. By welding the diff you are going to make your car handle such that the handling will be severley compromised, yes I've heard all the...
  9. BMW Z Series - Tech Talk Z1, Z3, Z4, Z8, Z9
    As title says, I'm trying to find out which, if any, of the Z4 models have LSD's fitted as standard. Considering buying one but want a model with an LSD. Thanks in advance.
  10. Motorsport and Drifting (BMW related)
    Im getting my diff welded this saturday and someone recently said that welders ruin driveshafts and are prone to snapping them. How true is this? Has this happened to anyone?
  11. BMW 3 Series Forum - Technical Talk on the BMW E46
    Evening all, Firstly, I'd like to introduce myself. I'm Charlie, and I've recently bought my first Bimmer, a 2001 330i M Sport Touring. Loving it so far, but there are a couple of things that need sorting, hence the post. Firstly, can someone please confirm the correct wheel and tyre sizes as...
  12. BMW Chassis and Brakes
    Did an engine conversion on a 316i compact , put the 2.8L engine out of a 328i in it we knew the diff would go eventually but i dont want to put another 1.6 diff into it as it will just chew it up as its done with this 1 is there a stronger differential maybe of a diesil model that would fit it...