2015 50i 40k mile mark

[Speenybean]

So I just hit the 40k mile mark on my 15' 50i that I purchased a few months ago. Besides regular oil changes which I just did, given the miles that I'm at are there any other maintenance items that I should consider ?? Plugs? Transmission fluid? The air and cabin filters were just replaced at 36k miles. Thanks fellas for the help.

[DuSh]

Originally Posted by Speenybean

So I just hit the 40k mile mark on my 15' 50i that I purchased a few months ago. Besides regular oil changes which I just did, given the miles that I'm at are there any other maintenance items that I should consider ?? Plugs? Transmission fluid? The air and cabin filters were just replaced at 36k miles. Thanks fellas for the help.

ZF transmission (oil + filter) needs to be change every 50-75k miles (depending on driving style and conditions e.g. like towing etc) - that is what manufacturer of transmission recommends (BMW didn't' build transmission, ZF did). So you still have time, unless all this time you were towing non stop lol.

Plugs - would be a good idea to change (a must if you are tuned), but if you are stock - meh, you can probably skip it till next time.

I wouldn't touch coolant yet (too early). Brake fluid - you can change if it was never changed as per BMW (but I personally would change it when you will change rotors/pads - to do it all at once).

Transfer case and differentials - I haven't looked at yet, but I think it's safe to assume to change them together with ZF transmission (once every 50-75k miles). Not 100% sure on this to be honest. I know if I could I would change TC (transfer case) every 50k at least - just because they experience a lot of stress considering our cars weigh more than 5000lbs and 50i has a lot of torque to digest with that tiny clutch in TC. And design of that TC is such that oil quality is crucial.

[Speenybean]

Originally Posted by DuSh

ZF transmission (oil + filter) needs to be change every 50-75k miles (depending on driving style and conditions e.g. like towing etc) - that is what manufacturer of transmission recommends (BMW didn't' build transmission, ZF did). So you still have time, unless all this time you were towing non stop lol.

Plugs - would be a good idea to change (a must if you are tuned), but if you are stock - meh, you can probably skip it till next time.

I wouldn't touch coolant yet (too early). Brake fluid - you can change if it was never changed as per BMW (but I personally would change it when you will change rotors/pads - to do it all at once).

Transfer case and differentials - I haven't looked at yet, but I think it's safe to assume to change them together with ZF transmission (once every 50-75k miles). Not 100% sure on this to be honest. I know if I could I would change TC (transfer case) every 50k at least - just because they experience a lot of stress considering our cars weigh more than 5000lbs and 50i has a lot of torque to digest with that tiny clutch in TC. And design of that TC is such that oil quality is crucial.

Thanks man. Appreciate it

[Russmov]

Originally Posted by Speenybean

Thanks man. Appreciate it

You can always count on DuSh to have the answers you need. Not really sure how he gets anything else done in a day because he's always helping on here lol