[RockCrusher]

Originally Posted by turnsignalslol

I just got my car back today and took all the advice into account, the most annoying thing to me is just having to randomly downshift on the highway while cruising to get the rpms to jump around a bit. I make long trips quite frequently so this is going to be quite bothersome but it's all worth it to have my car in tip top shape before break in

Mid April of this year picked up my M2 and had a 200+ mile drive home. 6-speed. At some places on the freeway I could lift off the gas pedal and let the car slow down then bring the car back up to speed while leaving the transmission in 6th gear. Other times I down shifted to vary the engine RPMs. No biggie.

I had practice: Picked up my new 2023 MINI JCW mid March of this year and drove it home 873 miles. 6-speed. Did the slow the car by coasting then accelerate up to speed or downshifted to vary engine RPMs at highway speed. Kind of interesting how the engine perked up as the miles rolled past 500 and up.

[aerobod]

Originally Posted by turnsignalslol

I drove 100 miles on the freeway today, and basically what I did the whole time was cruise for a little bit in 7th at like 2300 rpms (80mph), then I’d get off the throttle let it decelerate, then downshift to 6th around 3k rpms or even 5th at 4k rpms when I got bored. I’d then lightly use throttle to bring the rpms up then up shift back to seventh. Rinse and repeat. Is that how I’m supposed to check off the “varying revs” during break in? Please lmk if I’m doing something wrong

I’ve tended to be more aggressive with my break-ins on new vehicles, but it is more difficult on the G87 to follow my regime due to the power the car has. I try to keep the throttle at between 1/3 and 2/3 unless it is fully closed during deceleration (besides varying the revs in the 2400 to 4800RPM range as much as possible)

Probably not a detectable difference from doing a more gentle break-in, but the 20 or so new cars I have applied this technique to have all had good power outputs for their specs with no significant oil consumption.

[apez]

Most of my break in period has been mostly 3rd and 4th gear so far. Very little highway miles. I try to hit and briefly hold 5k (once warm) in 2nd and 3rd a couple times each hour drive. Higher gears is pretty impossible to hit higher revs in a safe fashion.

Can't wait for summer tires, higher revs, and mdm/less the 100% traction control. 650 miles to go before spring!

[DrewNewM2]

Is there a max number of months you can go before the Break in service if you’re not putting the miles on quickly? I’m in the northeast on summer tires so as soon as it drops below 40 I probably won’t drive it and even if I get winter tires, once it snows and they drop salt I’m definitely not driving it.

[turnsignalslol]

Question: I heard some people say that the "full" break in is 3100 miles, but it doesn't say anything about this in the M2 manual. Was this just for the older M cars? Either way, would it be best to wait until after the first 3k to really give the car the beans?

And should I keep this varying rpm bullshit going on until the full 3k or am I free to use cruise control after the 1200 mile break in service?

[turnsignalslol]

Originally Posted by apez

Most of my break in period has been mostly 3rd and 4th gear so far. Very little highway miles. I try to hit and briefly hold 5k (once warm) in 2nd and 3rd a couple times each hour drive. Higher gears is pretty impossible to hit higher revs in a safe fashion.

Can't wait for summer tires, higher revs, and mdm/less the 100% traction control. 650 miles to go before spring!

Almost at 400 miles, hoping to finish break in by the middle of January!

[M2siast]

Originally Posted by turnsignalslol

Question: I heard some people say that the "full" break in is 3100 miles, but it doesn't say anything about this in the M2 manual. Was this just for the older M cars? Either way, would it be best to wait until after the first 3k to really give the car the beans?

And should I keep this varying rpm bullshit going on until the full 3k or am I free to use cruise control after the 1200 mile break in service?

LOL the things people say man… where did you even hear this

[turnsignalslol]

Originally Posted by M2siast

LOL the things people say man… where did you even hear this

I think somewhere on the X3 forums haha, I think the 3000 mile "break in" was a real thing on the E90/E92 M3's but that's an old ass car, not sure if the procedures meant for a car 10+ years old applies to our G87s, but just wanted to play it safe

[M2siast]

Originally Posted by turnsignalslol

I think somewhere on the X3 forums haha, I think the 3000 mile "break in" was a real thing on the E90/E92 M3's but that's an old ass car, not sure if the procedures meant for a car 10+ years old applies to our G87s, but just wanted to play it safe

The V8 had the same 1,200 mile RiS our cars do, and a further recommendation to not go over 135mph before 3,000 miles.
Our cars don’t have that further recommendation.

[RockCrusher]

Originally Posted by turnsignalslol

Question: I heard some people say that the "full" break in is 3100 miles, but it doesn't say anything about this in the M2 manual. Was this just for the older M cars? Either way, would it be best to wait until after the first 3k to really give the car the beans?

And should I keep this varying rpm bullshit going on until the full 3k or am I free to use cruise control after the 1200 mile break in service?

My info is break in continues some miles ("thousands" of miles was mentioned) beyond the official break in miles.

This continuing break in was confirmed by lab and field (track/road) tests.

But how long after the nominal break in miles is unknowable for an engine.

While break in continues one has to believe the factory considers 1200 miles sufficient break in to the point the engine can then be operated pretty much as the owner wishes.

So as long as the factory doesn't prohibit using cruise control after 1200 miles use it.

[keonigt]

I'm just doing what the manual said. Below 600 miles, keep my mph below 100* and rpm below 5k.

[keonigt]

Originally Posted by RockCrusher

My info is break in continues some miles ("thousands" of miles was mentioned) beyond the official break in miles.

This continuing break in was confirmed by lab and field (track/road) tests.

But how long after the nominal break in miles is unknowable for an engine.

While break in continues one has to believe the factory considers 1200 miles sufficient break in to the point the engine can then be operated pretty much as the owner wishes.

So as long as the factory doesn't prohibit using cruise control after 1200 miles use it.

Is there anything you recommend on doing after the 1200 "break in" period? Or should I drive it normally?

Also, we are able to use cruise control during break in period correct?

[Baller]

Originally Posted by keonigt

Is there anything you recommend on doing after the 1200 "break in" period? Or should I drive it normally?

Also, we are able to use cruise control during break in period correct?

No cruse control is not recommended during break in and drive it likes it’s stolen after the 1200 mi

[RockCrusher]

Originally Posted by keonigt

Is there anything you recommend on doing after the 1200 "break in" period? Or should I drive it normally?

Also, we are able to use cruise control during break in period correct?

I don't recall any restriction using cruise control. However, there is this: Up to 600 miles/1,000 km

Drive at varying engine and road speeds, but do not exceed 5000 rpm and 106 mph/170 km/h.

Avoid full throttle or kickdown under all circumstances.

And: From 600 miles/1,000 km to 1,200 miles/2,000 km
Drive at varying engine and road speeds, but do not exceed 6000 rpm and 130 mph/210 km/h.

Avoid full load in gears 1 to 3.

At 1,200 miles/2,000 km
Have break-in service maintenance performed.


The drive at varying engine and road speeds is of course in opposition to the type of driving one will do with cruise control active. So that could be a ban (of sorts) on using cruise control during break.

As for post break in...Just follow what -- if anything -- BMW calls for post break in. In my owners manual there is no restrictions on post 1200 mile driving. BMW considers the engine/drive train broken in.

However, I avoid switching from being Dr. Jekyll to Mr. Hyde immediately after break in. I gradually raise the RPMs threshold over hundreds of miles and while I have no hard/fast mileage at which I begin to use full RPMs it is hundreds of miles past 1200 miles.

[kyrix1st]

Blackstone oil analysis generally shows elevated piston ring particles until about 10,000 miles. I'd probably play safe until 3,000 mls.

[keonigt]

I think I’ve made a mistake…

I was at 630 miles and went over 6k rpm for about a 1-2 seconds. It was just very briefly. I hope this doesn’t cause anything bad. It wasn’t at WOT also. Just maybe half throttle.

[M2siast]

Originally Posted by keonigt

I think I’ve made a mistake…

I was at 630 miles and went over 6k rpm for about a 1-2 seconds. It was just very briefly. I hope this doesn’t cause anything bad. It wasn’t at WOT also. Just maybe half throttle.

It’s now a total loss, contact your insurance so they can scrap the car as per the manual.

[turnsignalslol]

Just took my car in for break in today, not gonna lie did give it some juice after taking it back but I haven't done WOT yet. Probably gonna progressively increase how much I abuse it up to 3k miles lmao

[RockCrusher]

Originally Posted by keonigt

I think I’ve made a mistake…

I was at 630 miles and went over 6k rpm for about a 1-2 seconds. It was just very briefly. I hope this doesn’t cause anything bad. It wasn’t at WOT also. Just maybe half throttle.

A bit of a mistake but I think one that will prove to not have any real effect.

The longer the engine RPMs remain elevated the more risk there is but for just a second or two...

Relax.

Oh, I can understand how it happened. The engine gains revs at a horrific rate.

[micah_675]

People over think this way too much. Drive your car for 1200 miles, don't go on a 1200 mile road trip to get those 1200 miles. You can drive it spirited (spirited does not mean full throttle) and not exceed the RPMs stated in the posts above.

Engine LOAD is the factor here. Load means how much power you are using, BMW is asking you to not use every ounce of power the car has on day one. That leaves 50% throttle on the table and even 75% throttle on the table.

Again drive your car and hit the 1200 miles like you drive it any other time. If you can't stop yourself from using all the gas pedal all the time you probably need a different car. If you are too worried to use your gas pedal please get a different car as well.

Tl;dr: You won't break it unless you beat on it 24/7 day one or just drive it for 1200 miles at the same speed day one.

[Bearded-Driver]

i was shifting at 3k once i hit past 200 miles i started to ring out each gear up to 5k hitting a speed of 104mph. ill be doing this off and on up to 600 miles now at 380.

once at 600 miles ill ring out each gear to 6k and so on according to the break-in in the owners manual that should be well with-in spec.

But really just drive it and enjoy its under warranty and if your within the owners manual specifications nothing to worry about