[fastboatster]

I'm pretty sure rear diff bushings are bad in my 328i, at least the large diff bushing is cracked. I mostly use my 328i as a daily driver when conditions don't allow 335i to put the power down (snow etc), so it's no "race car" by any means, and I don't want too much extra NVH. What rear diff bushings would you recommend? Obviously, OE/OEM bushings would provide stock NVH, but rubber bushings might get tricky to install, so some poly bushings can be an alternative, can't they?
I was thinking about getting these Whiteline bushings
https://whitelineperformance.com/pro...19-bushing-kit
Has anybody used these before? I saw a couple of vids where somebody was saying these are "too soft" and "not worth it", but perhaps their expectation was that these will be like solid bushings

[tlow98]

Harder durometer driveline component bushings generally makes a pretty large impact on NVH. As in, it vibrates and gets a lot louder. I’d stay with stock for daily

[fastboatster]

I'm probably going to go with revshift street bushings (https://revshift.com/products/differ...44729534054629). they are promising OEM+ NVH etc, but maybe even harder bushings will be miles better than torn OEM ones. Poly bushings are probably going to be relatively easy to remove later if I don't like them.
One thing not clear to me is if poly diff bushings will need to be lubricated from time to time, I'd really prefer not having to do that.