[Amabeamerboy]

As an owner of an E90 325i N52, I wanted to reach out to the community and ask for some advice on weekly/monthly maintenance. I want to ensure that I am taking the best care of my vehicle to keep it running smoothly.
I have been following my main workshop’s maintenance schedule, but I was wondering if there are any additional steps I should be taking on a weekly or monthly basis to keep my car in top condition.
Any advice or tips on things like oil changes, tire rotations, brake checks, and other routine maintenance tasks would be greatly appreciated. I am also curious about any specific products or brands that you would recommend for keeping my car looking and running like new.
Thank you in advance for your help and guidance. I truly appreciate the knowledge and expertise of this community.

[Efthreeoh]

Follow the CBS. Fix stuff when it breaks.

[FimbulWinter]

I have the same car, just get yourself ista or mobile scanner like carly to check for faults, normal readings, and symptoms. I do it weekly every monday. Only change parts that are faulty.

[e90times2]

I have an e90 that I went through over the course of the past 7 years. I essentially just keep it up, now, as well. The best thing I did for this car was install a new suspension system (Koni/Eibach Street package; under$800 for the system), which also lower it almost 2 inches. I upgraded the stereo to an android. Having a great with the Kumhos on there. Stay away from the cheap oil changes, as the $4 filters they use can/will collapse and can cause huge problems. Also, they use recycled oil. Keep the rubber strips on the outside lubricated. If your window regulators require replacement, put decent ones on there, else the $30 cheapies will break again. FYI: I was able to put great aftermarket headlights on the car for about $350 set. Inside door panels are only around $80-$90 including shipping...had my backs replaced. Bumper covers are cheap for these...had mine replaced before painting it. Consider a portable air/compressor to keep your tires at prime levels...will make them last longer and the ride will be optimal. (Got mine on sale for $55; already paid for itself, as most pay-per machines don't work correctly and eat your change.)

Change the Coolant Port Fitting. Upgrade to aluminum. The plastic ones disintegrate. These are only $15; a cheap fix you'll only have to do once. I ut this on in my N52 & N54: https://burgertuning.com/collections...t-port-fitting

Cheers!

[ctuna]

Lots of info in the attachment.
Including Mike Millers Maintenance schedule suggestions.
Accessory Belt tensioner an oil leaks in the front of the Engine
are essential to get fixed because of this.
broken belt
http://www.bimmerfest.com/forums/sho....php?t=1231881
http://www.e90post.com/forums/showpo...3&postcount=23
https://www.oxwerkzperformance.com/
http://www.e90post.com/forums/showthread.php?t=1477111
https://www.e90post.com/forums/showthread.php?t=1305990

[Daaaaaaaan]

Oil everything that moves: Door hinges. The mechanism that locks the doors against the B and C pillars. Trunk hinges. Hood hinges and the opener mechanism.

I always do a few squirts of silicone spray into the key holes (including the trunk one if you have it) and run the key back and forth several times. Always worried they could seize from lack of use and not work when you really need them!

Check your ground straps.

Carry a good Plan B kit. Carry some essential tools: Fix-a-flat (as a last resort), tire plug kit, some liquid that you can spray that will bubble to identify leaks, reflective vest, flares, multimeter, zip ties, some basic wrenches/screwdrivers, jack stand adapter (and a jack+universal lug nut wrench+cheater bar (I use a 3' section of fence post)), chicken wire, duct tape, 1L oil, bottle of distilled (drink or use as coolant if needed), jumper cables, air pump. Even have an emergency bivouac (hey, it was $6).