Shops quote $15,000–$20,000 for this one, and the quote usually isn't the ripoff, the job really is that big. Here's what's actually failing, what the correct repair involves, and the honest part: this is not a job I do in a driveway.
The S85, the 5.0-litre V10 from the 2005–2010 E60 M5 and E63 M6, is the most exotic engine BMW ever put in a sedan, and it has the maintenance profile to match. Its rod bearings wear even faster than the S65 V8's: ten rods, tight clearances, and an 8,250-rpm redline grinding away at the bearing overlay. In the M community, S85 bearing replacement isn't a debate; it's a deadline. Cars with unknown bearing history are priced accordingly, because a spun bearing on a V10 is a five-figure engine hunt.
The S85 adds a second, sneakier failure on the same clock: the high-pressure VANOS oil line. The S85's VANOS system runs at high pressure off its own dedicated pump, fed through a line that goes brittle with age and heat. When it cracks, you get VANOS faults, erratic cam timing and oil where it shouldn't be, and a failed line can take the VANOS system's performance down with it. Because both jobs share the same service window, the smart move is doing the line while the bearing job already has the car opened up.
Symptoms stack up the same way they do on all worn-bottom-end M engines: lifter-like ticking, low oil pressure warnings, VANOS fault codes and a rough idle. Any one of those on an S85 deserves immediate attention, because the distance between 'ticking' and 'knocking' on this engine is short, and nothing on the far side of a knock is affordable.
If your BMW is doing any of these, this is the likely cause:
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See how that range compares across Mississauga, Oakville, Milton, Brampton and Etobicoke in the GTA Repair Price Index, honest shop & dealer ranges for the jobs people actually get done.
Rod Bearing & High-Pressure VANOS Line Replacement is on my published list of jobs I turn down. It needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. That list is public on my trust page. I'd rather lose the job than learn it on your engine, and you should be suspicious of anyone who says yes to this over the phone.
So here's what I can genuinely do for you, holding a $15,000–$20,000 quote. Both are real, both are flat-priced, and both are worth more than a bad yes.
Before you spend $15,000–$20,000, have someone independent confirm that's actually what's wrong. This is a diagnosis, not the repair, no hoist, no lift, nothing comes apart. I scan it, test it, look at it with you, and tell you straight whether their diagnosis holds up. If it does, I say so and you go pay them with confidence.
Book the second opinion →At $15,000–$20,000 on a car that might be worth not much more, plenty of people replace instead of repair, that's a completely reasonable call. If that's where you're heading, get the next car measured before you hand over money: 150 published points, at the seller's location, written report the same day.
Book a pre-purchase inspection →Tell me what you've been quoted and what the car is doing. $100–$250 flat, at your location, and you get a straight answer either way.
Rather just have the quote read? The free quote check tells you whether the number is in line, no visit needed.
Jobs on this car that ARE mine:
Not so you can do it yourself, so you can tell whether the shop quoting you understands the job:
That's the job. It's why this one belongs on a hoist instead of in a driveway, and it's why $15,000–$20,000 usually isn't a ripoff, it's a big repair honestly priced. What's worth checking is whether that's really what your car needs.
Get the diagnosis confirmed firstPlain version: Rod Bearing & High-Pressure VANOS Line Replacement needs equipment a driveway doesn't have, a hoist to get under it properly, a press or a machine shop for the parts that come out, and a controlled space for an engine or gearbox that's in pieces for days. I work out of driveways with hand tools. That's not false modesty, it's the published limit of what I take on, and it's listed on my trust page alongside the warranty.
What that means for you: this page is here to tell you what's failing and what it should cost, so you walk into a shop knowing the job instead of nodding at a number. And if you want that number checked before you pay it, that part I can do, $100–$250 flat, at your location.
The S85 gives less warning than almost any engine before a bearing lets go, and the consequence is total: a spun bearing wrecks the crank, and replacement V10s are scarce and brutally expensive. The VANOS line is the same story in miniature, brittle plastic under high oil pressure, and when it splits it doesn't pick a convenient moment. Both parts are aging on every drive. Done preventively, this is one planned visit; done reactively, it's the end of the car for most owners.
Because they fail on the same timeline and share the same service visit. The S85's high-pressure VANOS line goes brittle with the same years and heat that wear the bearings, and a cracked line means oil loss and cam-timing faults on an engine that just got fresh bearings. Doing both at once means one visit, one disruption, and the two best-known S85 weak points retired together.
On an S85, a new tick is a stop-driving-hard signal until it's diagnosed. It may be something benign, but bearing wear on this engine announces itself late and escalates fast. We can inspect, oil and filter evidence, pressure readings, and listening with proper equipment, and tell you honestly whether you're looking at the bearing job or something smaller.
No. Rod Bearing & High-Pressure VANOS Line Replacement is on my published list of jobs I turn down, it needs a hoist, a press or a machine shop, and I work out of driveways with hand tools. I'd rather lose the job than learn it on your engine.
Two things, and both are real. A second-opinion diagnostic at your car, $100–$250 flat, at your location, so somebody independent confirms that's actually what's wrong before you commit to a $15,000–$20,000 repair. And if you're weighing replacing the car instead of fixing it, a pre-purchase inspection on the replacement, $149–$399 flat, at the seller's location.
Because the useful part isn't the wrench. It's knowing what's actually failing, what the correct repair involves, and that shops quote $15,000–$20,000 for it, so you walk in knowing the job instead of nodding at a number. If you want that number checked before you pay it, that part I can do.
Send it over for a free second opinion. I'll tell you straight what the job actually involves, and if their quote is fair, I'll tell you that too.
Get a Free Second OpinionOther makes:
I'm not the guy who does this repair. I'm the guy who tells you whether you actually need it, before you spend $15,000–$20,000. Second opinion at your car, $100–$250 flat, in Mississauga, Oakville, Milton, Brampton and Etobicoke.
Book a Second Opinion Inspect a Replacement CarYour options on this one