When m135i arrives, do I need to bother running in?
Discussion
So, age old debate.....running in of new cars....
When the M135i arrives in a week, do I need to treat her gently for a few miles? Or just give it the beans from day 1?? Notice there's no 1200 service on these..not a fully fledged M you see ;-) so is running in not so important?
Thanks in advance, especially for any actual experiences with those who've already been and done it with this one...
When the M135i arrives in a week, do I need to treat her gently for a few miles? Or just give it the beans from day 1?? Notice there's no 1200 service on these..not a fully fledged M you see ;-) so is running in not so important?
Thanks in advance, especially for any actual experiences with those who've already been and done it with this one...
You unequivocably need to run it in. No ifs, or buts.
The way these threads go is as follows, someone will now say that it's no longer necessary because modern machining is so good, and cite some cack arsed US racing website where they run their racing engines flat out from day one.
Someone else will tell you that they never ran their racing bike engines in and they where always the fastest on the track, beat Mick Doohan in the rain, could have turned pro etc.
You absolutely have to run these engines in, if not, you are risking causing damage.
The way these threads go is as follows, someone will now say that it's no longer necessary because modern machining is so good, and cite some cack arsed US racing website where they run their racing engines flat out from day one.
Someone else will tell you that they never ran their racing bike engines in and they where always the fastest on the track, beat Mick Doohan in the rain, could have turned pro etc.
You absolutely have to run these engines in, if not, you are risking causing damage.
I'm running my new M135i. So far I'm up to 800 miles and it still feels pretty tight.
The manual does say to run it in for 1200 miles and then build up the engine speed from there. Why would the manufacturer advise you to run it in if it wasnt necessary?
When I bought my S1000RR motorbike, it was rev limited by the factory for the first 600 miles until the first service when the programmed limiter was removed. Thats because it had to be run in.
I remember having to run in my Civic Type R back in 2000.
Cant imagine why you would buy a new vehicle and not run it in unless you are desperately impatient.
The manual does say to run it in for 1200 miles and then build up the engine speed from there. Why would the manufacturer advise you to run it in if it wasnt necessary?
When I bought my S1000RR motorbike, it was rev limited by the factory for the first 600 miles until the first service when the programmed limiter was removed. Thats because it had to be run in.
I remember having to run in my Civic Type R back in 2000.
Cant imagine why you would buy a new vehicle and not run it in unless you are desperately impatient.
BOR said:
You unequivocably need to run it in. No ifs, or buts.
The way these threads go is as follows, someone will now say that it's no longer necessary because modern machining is so good, and cite some cack arsed US racing website where they run their racing engines flat out from day one.
Someone else will tell you that they never ran their racing bike engines in and they where always the fastest on the track, beat Mick Doohan in the rain, could have turned pro etc.
You absolutely have to run these engines in, if not, you are risking causing damage.
At least someone who seems to know what they are talking about rather than the usual internet myth and rumour, what kind of engines to you design BOR? The way these threads go is as follows, someone will now say that it's no longer necessary because modern machining is so good, and cite some cack arsed US racing website where they run their racing engines flat out from day one.
Someone else will tell you that they never ran their racing bike engines in and they where always the fastest on the track, beat Mick Doohan in the rain, could have turned pro etc.
You absolutely have to run these engines in, if not, you are risking causing damage.
Genuine question: Is the running in process not actually related to the transmission rather than the engine now?
In any case, I would follow the 1200 miles running in, unless you have no mechanical sympathy and will hand back the car at the end of a 2 year lease programme (where the car will then become a possibly unfortunate else's pride & joy).
In any case, I would follow the 1200 miles running in, unless you have no mechanical sympathy and will hand back the car at the end of a 2 year lease programme (where the car will then become a possibly unfortunate else's pride & joy).
Would I be right in saying that the worst thing you can do when running an engine in is to labour it, i.e. demand a high load at low engine speeds? Worse than letting the revs go high under a light load?
I've never run in a petrol engine and I think if I bought a new M135i or similar performance motor my OCD would be working overtime in the first 1200 miles to make sure I ran it in as "optimally" as possible!
I've never run in a petrol engine and I think if I bought a new M135i or similar performance motor my OCD would be working overtime in the first 1200 miles to make sure I ran it in as "optimally" as possible!
mattcambs said:
Would I be right in saying that the worst thing you can do when running an engine in is to labour it, i.e. demand a high load at low engine speeds? Worse than letting the revs go high under a light load?
I've never run in a petrol engine and I think if I bought a new M135i or similar performance motor my OCD would be working overtime in the first 1200 miles to make sure I ran it in as "optimally" as possible!
That is the way I have always understood it. Letting an engine labour in high gear is not good in terms of strain on moving mechanical componants especially when new. Should vary revs as well by going up and down the box rather than staying at one level of rpm for prolonged periods. All IMO of course.I've never run in a petrol engine and I think if I bought a new M135i or similar performance motor my OCD would be working overtime in the first 1200 miles to make sure I ran it in as "optimally" as possible!
I'd say the car needs running in, but I do not agree with 1200 miles at less than 4.5k.
My car had an easy 200 miles with the occasional rev round to 5-6k. I then gradually increased her till I was happy to give full beans by 400ish miles, but only in short bursts. By 700miles I was driving the car how I wanted but avoiding continuous full throttle through all the gears time after time.
I tried my hardest to make sure that I varied my driving all the time. You really want to be working the engine and not just pootling about at 1000-3000rpm all the time.
The car now has 1400miles on the clock and gets driven however I fancy.
BMW really need to try and get their staff to answer consistently. Every person I asked in my dealer said not to worry about it and to get on with it from the word go.
Several members of my family consistently buy new cars and break in similarly and nobody has had a problem yet, all the cars are PH worthy sports cars with similar engines.
My car had an easy 200 miles with the occasional rev round to 5-6k. I then gradually increased her till I was happy to give full beans by 400ish miles, but only in short bursts. By 700miles I was driving the car how I wanted but avoiding continuous full throttle through all the gears time after time.
I tried my hardest to make sure that I varied my driving all the time. You really want to be working the engine and not just pootling about at 1000-3000rpm all the time.
The car now has 1400miles on the clock and gets driven however I fancy.
BMW really need to try and get their staff to answer consistently. Every person I asked in my dealer said not to worry about it and to get on with it from the word go.
Several members of my family consistently buy new cars and break in similarly and nobody has had a problem yet, all the cars are PH worthy sports cars with similar engines.
russy01 said:
I'd say the car needs running in, but I do not agree with 1200 miles at less than 4.5k.
My car had an easy 200 miles with the occasional rev round to 5-6k. I then gradually increased her till I was happy to give full beans by 400ish miles, but only in short bursts. By 700miles I was driving the car how I wanted but avoiding continuous full throttle through all the gears time after time.
I tried my hardest to make sure that I varied my driving all the time. You really want to be working the engine and not just pootling about at 1000-3000rpm all the time.
The car now has 1400miles on the clock and gets driven however I fancy.
BMW really need to try and get their staff to answer consistently. Every person I asked in my dealer said not to worry about it and to get on with it from the word go.
Several members of my family consistently buy new cars and break in similarly and nobody has had a problem yet, all the cars are PH worthy sports cars with similar engines.
This is the approach I have taken with every new car I have bought and had no problems.My car had an easy 200 miles with the occasional rev round to 5-6k. I then gradually increased her till I was happy to give full beans by 400ish miles, but only in short bursts. By 700miles I was driving the car how I wanted but avoiding continuous full throttle through all the gears time after time.
I tried my hardest to make sure that I varied my driving all the time. You really want to be working the engine and not just pootling about at 1000-3000rpm all the time.
The car now has 1400miles on the clock and gets driven however I fancy.
BMW really need to try and get their staff to answer consistently. Every person I asked in my dealer said not to worry about it and to get on with it from the word go.
Several members of my family consistently buy new cars and break in similarly and nobody has had a problem yet, all the cars are PH worthy sports cars with similar engines.
And it's not that much of a chore, you will be able to make very brisk progress from day one using 4,000 revs and part throttle.
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