Originally Posted by bmw540san

It's been almost 2 years since I got my X5 and it's been love hate relationship.

One thing is clear: While E39 has it's share of problems, the build quality of X5 is clearly lacking in some departments.

Both front window regulators replaced by PO at dealer at very early age. Rear right replaced at dealer just before I got it and then it failed again about 1.5 year into my ownership.

While I generally avoid Uro, Dorman etc... at that point I decided to get Dorman brand for around $50 bucks. I compared it to failed BMW part and I could not see any difference in quality or fit whatsoever.

Another advantage of Dorman is lifetime warranty. Sure, I have to replace it myself but BMW part is only 2 years warranty and they have to replace it. I'd rather take a trip to the moon before I let dealer work on my car.

At the moment, it's been almost a year with Dorman regulator operating flawlessly.

So just yesterday my last original window regulator failed and I ordered another Dorman regulator. I'll post periodic update how both of them are performing.

What's really funny is the fact that are probably millions of 20+ year old POS's on the road and with original electric windows operating.

But, after just switcing to Bilstein HD struts and shocks, refreshing front and rear suspension and deleting rear air suspension, the beast is handling and running flawless so I'll forgive her this little mishap.