One Thousand Two-Hundred Miles
11-09-2005, 07:35 PM
#11
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My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.
It seems a bit silly to me to think that keeping revs below 4500 at 1199 miles is good for the car while revs above 4500 at 1200 miles are no problem? Obviously BMW has to choose breakin numbers, but I wonder what the actual mileage of concern is? Also, what about those of you who did not strictly adhere to the breakin schedule - any vehicle problems?
BMW was probably conservative with the numbers... its probably ready at 800 miles and should be slowly reved up at incriments of 100rpms every 100miles or so. But thats more confusing so why not just say 1200miles and then rev up slowly... and if people dont follow that its no problem.
As for those that dont follow the procedures its not much of a problem either... it "can" be beaten from day one. I know some people who believe in break it in hard since new... a friend of mine did that with his car since day one he warmed up the engine and drove it HARD as he can FULL throttle for 20 miles and his cars perfectlly fine right now and is pretty powerful for that matter... Dynoed HP more than it was rated...
You wont see any engine problem i dont tink... maybe when it hits 250,000 miles... haha while those who broke in the car properly can get 300,000 miles but you can only get 250,000
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EMBCS03, there's some truth to that. I discovered several weeks ago that a project manager at my work race motorcycles and drag cars. He, too, does what your friend does for break-in on new racing motors. I didn't follow BMW break-in to the "T" and I'm going to see if I can put it on a dyno (he has access). I felt that my bimmer runs and sounds better if I run it harder rather than lighter. In other words, the 4.4 liter responses better at 2500 rpm and higher. Below that, it drags its feet on acceleration.
11-09-2005, 07:53 PM
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My Ride: 545iSMGSilver GrayAuburn Dakota LeatherLogic 7 Premium SoundSports Package
Originally Posted by Bimmer32' post='196057' date='Nov 9 2005, 08:35 PM
EMBCS03, there's some truth to that. I discovered several weeks ago that a project manager at my work race motorcycles and drag cars. He, too, does what your friend does for break-in on new racing motors. I didn't follow BMW break-in to the "T" and I'm going to see if I can put it on a dyno (he has access). I felt that my bimmer runs and sounds better if I run it harder rather than lighter. In other words, the 4.4 liter responses better at 2500 rpm and higher. Below that, it drags its feet on acceleration.
Ya I believe theres is some truth to it. I too didnt follow the 1200miles to the T either... i followed maybe 80% of it... at times under 1200 miles I did let the engine stretch its legs up to like 6000 7000 rpms briefly... My friend just for information just graduated from Univeral Techincal Institute - AUtomotive School and got accepted into the BMW program and is going to BMWs training center in Florida training to be a BMW technician... so if he beat is car that hard when new for 20 miles he must have had a better reason to do so than "i felt like it"
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