[John 070]

Originally Posted by Vivek.

Oh hey! I'm that forum member. Glad to see you got em on man, looks really good.

Hey guys, btw, is BMW riveting the hats on all rotors now? I noticed that on a '20 330i loaner. Used to be I think, 5 series V8 and above, hats were aluminum to save weight....

any weight savings?

[unixnerd]

Originally Posted by John 070

Hey guys, btw, is BMW riveting the hats on all rotors now? I noticed that on a '20 330i loaner. Used to be I think, 5 series V8 and above, hats were aluminum to save weight....

any weight savings?

I've never seen that before, interesting. The //M cars often used floating rotors to better cope with heat. This link from Textar mentions BMW: https://textar.com/en/composite-brake-discs/

[Vivek.]

Originally Posted by John 070

Hey guys, btw, is BMW riveting the hats on all rotors now? I noticed that on a '20 330i loaner. Used to be I think, 5 series V8 and above, hats were aluminum to save weight....

any weight savings?

It could definitely be becoming more common. Shaving rotational mass, however incremental, helps with fuel economy and has other benefits in terms of acceleration and braking. IIRC these are 2-3lbs per corner lighter than all-steel rotors. This makes a much larger difference than shaving 10lbs off, say, the engine bay.

[unixnerd]

Originally Posted by Vivek.

It could definitely be becoming more common. Shaving rotational mass, however incremental, helps with fuel economy and has other benefits in terms of acceleration and braking. IIRC these are 2-3lbs per corner lighter than all-steel rotors. This makes a much larger difference than shaving 10lbs off, say, the engine bay.

What with the huge brakes on modern BMWs and the wide runflat tyres unsprung weight must be about double that of my E30. An alloy hat won't make much difference to rotational mass as all the savings are in the centre, but it'll certainly be better for track use because of the two piece floating design.

Some cars, such as old Jaguars and Alfas, used inboard discs on the driveshafts. Big reduction in unsprung weight but no fun to change discs.

[F13.KENN]

Oil filter housing gaskets, 1 step colder plugs, oil change, and liquimoly ceratec

[SpeedBuggy]

Originally Posted by 3PedalJake

That is the key you have to get the corrosion off and start w/ a good sealed base. I haven't heard of this shineseal, thx for the tip I can't resist trying new stuff. The white diamond metal polish is supposed to have a sealer, but this you mentioned looks like a 2 step process like a ceramic paint coating. interesting

Originally Posted by 3PedalJake

Cool I have a sportster and eglide ultra so I know what you mean about the polishing. I still like it tho. If you wipe this stuff on every once in a while it at least won't get any worse, it leaves a film you can feel on it but not heavy like stuff is going to stick to it.

https://www.amazon.com/WD-40-300038-.../dp/B00631GWS4

Thanks again for the suggestions. Reading thru the description I noticed the Silicone Spray. I wonder how that would protect after cleaning up the oxidation. Used silicone spray on the chrome wheels on our cars back in the day (chrome reverse w/ baby moon's if you're old enough to remember) to protect against rain and snow.

[Mosaud1998]

Wipe the dust off (been sitting in the garage ever since the plandemic)

[Bmw1939]

Rear passenger window regulator. Got the part for 25 bucks. Finished in 30 minutes. The dealer would probably charge 2000 dollars. Winning.

[M-technik-3]

Originally Posted by unixnerd

What with the huge brakes on modern BMWs and the wide runflat tyres unsprung weight must be about double that of my E30. An alloy hat won't make much difference to rotational mass as all the savings are in the centre, but it'll certainly be better for track use because of the two piece floating design.

Some cars, such as old Jaguars and Alfas, used inboard discs on the driveshafts. Big reduction in unsprung weight but no fun to change discs.

E30 wheels and brakes are featherweights in comparison to an E90. That is why E30's are such a fun car, relatively light weight with ok hp stock and suspension that works with both.

[longm1985]

Originally Posted by longm1985

Hey everyone. I'm new here and just bought a 2011 328i Xdrive on Thursday. I'm in love with it.

But anyway, what I've done today: used degreaser to get rid of what I think is someone spilling oil to see if that comes back and seeps more. If so, I've got my work cut out for me... all 20 minutes worth. lol

I also ordered a little CF trim ring to go around the start button. The paint is flaking and rather than buy a whole new one or remove it and hope to paint it (don't know how hard that would be) if I can just throw a neat little CF sticker with the M colors on instead, why not?

So I apparently used way too much degreaser. There's a giant puddle of it mixed with grime right under the car (directly below where I sprayed it) and now my garage reeks of degreaser and it won't clean up easily with what I have laying around. I swear I can be a nitwit.

[335IE90]

left my sunroof vent open for our snow store we had last night. Found a bunch of snow lining my sunshade. What a smuck !!!

[longm1985]

Originally Posted by 335IE90

left my sunroof vent open for our snow store me had last night. Found a bunch of snow lining my sunshade. What a smuck !!!

As we midwesterners say: ope



Oh I had my tires put on yesterday. The ones on it were worse than I'd thought. Rears were down to the wear bars. Jeebus this thing is smooth now.

[Emilime75]

Originally Posted by longm1985

So I apparently used way too much degreaser. There's a giant puddle of it mixed with grime right under the car (directly below where I sprayed it) and now my garage reeks of degreaser and it won't clean up easily with what I have laying around. I swear I can be a nitwit.

You're supposed to do this outside on a cold engine and then rinse it off with a hose after it's been sitting for a few minutes.

[nsjames]

Originally Posted by Emilime75

You're supposed to do this outside on a cold engine and then rinse it off with a hose after it's been sitting for a few minutes.

at the car wash

[3PedalJake]

For the most part I really enjoy working on these cars, but these struts were probably the least enjoyable and nerve wracking task so far. I was able to get the old ones apart with my cheapo spring compressors, and the only reason I had to was for the domed washer on top (because I neglected to order one). Putting them together it didn't take long to gouge one up and scare the crap out of myself. After it almost escaped the compressor twice I took them to my cousins shop where he helped me with his real wall mounted spring compressor, and even that was kinda sketchy on account of how these springs want to lean to one side. But got them in amen and whew! another job crossed off the list.

The date on the springs is 2/05, 3 months before the car was produced and now have 206k miles on them. The piston just flops around and I don't think there's one drop of oil left in them, they don't owe the world anything at this point.

[longm1985]

Originally Posted by Emilime75

You're supposed to do this outside on a cold engine and then rinse it off with a hose after it's been sitting for a few minutes.

Well I did the cold engine and rinse parts... Just not the outside part. Derp.

[neilvan]

Grabbed a clean(but dirty) low km rear subframe that already had M3 bushings installed.

Still has stock diff bushings though, Is the consenus that the 2 front M3 bushings and the rear F series ones are the way to go? Will still have to source an M3 rear sway before I install

[335IE90]

Kept loosing tire pressure so decided to take my wheel off and found this in the worse place possible. put a plug in it even tho this is a big no no

[Emilime75]

That is definitely a big no no. Unfortunate, too.

[John 070]

Originally Posted by Emilime75

That is definitely a big no no. Unfortunate, too.

Agreed....I too have plugged where it wasn't supposed to be (like around 1/2" from the side). What I've found that if on the front tires, always leaking and needing air. Same tire in rear, eventually leaks too but not as badly.

[335IE90]

Well the tires are just about at the end of there life. Looking to be about 4/32 so the plug will have to do for now.

[3PedalJake]

Today was a fun day, mountains of new toys.

TRW BMW M3 Thrust arm and Control arm with the BMW logo ground off (less than half the price without the logo)
Meyle HD tie rods and sway bar links
Ebay M3 sway bar
F.A.G wheel bearing hubs
Bilstein B4 shocks
Lesjofors springs