A spun rod bearing may also be caused by wearing down of the bearing with time, or even due to improper assembly in the engine. ... Rod knock -- a steady hammering that increases linearly with rpm -- happens when excess clearances causes by bearing wear cause the rod big-ends to hammer against the crankshaft at the top and bottom of the piston stroke. This is the set of rod bearings for the S85 V10 in the E60 M5 and E63 M6 (BMW part numbers 11247841703 and 11247841702). BMW E60 M5 S85 5.0L Connecting Rod - Bearing - Set High Performance Rod Bearing Set - Oversized (+.025) Includes upper and lower bearing shells for a complete rod bearing replacement. 1. Worn rod bearings are one of the hottest topics for the S85 engine. A few weeks ago, we had a customer contact us regarding his E60 BMW M5. BMW S85 Rod Bearing Issues. Tl;dr - My 2008 M5 has been a joy to drive and own for the last 5 years and 60k miles. thank you everyone. This is just the set of bearings and does not include any of the other items that need to be replaced at the same time (connecting rod bolts, oil pan gasket, hardware, etc). These issues are especially exclusive to the e60 era m5, plenty of cars make the same double triple quadruple the power and have no issues. I have an E60 M5 … When damage to a rod bearing is confirmed, it should be replaced. However, the M5 and M6 were nearly $100,000 cars when new and they demand the maintenance and repairs you’d expect out of a high-revving V10. Still on original rod bearings at 130k miles, I average 13mpg and burn through rear tires on a regular basis. E60 M5 Rod Bearing Failure! He expressed to us that he had been contemplating whether or not to bite the bullet and replace the V-10 S85’s bearings after seeing and hearing of the horrible … Stock BMW bearings tend to run a little on the tight side, as do the standard ACL bearings. (Like any high performance engine) One of the most troublesome is the premature failure of the connecting rod bearings. This set of ACL bearings is a set we developed to achieve the bearing clearance we believe is ideal for this engine. ACL Rod Bearings - BMW E60 E63 M5 M6 - S85. It has had a number of the common problems that are notorious for the E60 M5 over the years but I've had no major mechanical breakdowns. Symptoms of Engine Bearing Failure by Richard Rowe . Rod knock is a sure indicator of worn bearings. This makes replacing it much easier. The front wheel bearing on rear wheel drive (RWD) E60 models bolts into the steering knuckle, unlike previous models that were pressed in. Its no secret that the powerful S65 V8 that came in the e90 e92 and e93 BMW M3 (2008-2013) has some known mechanical issues. 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