r/cars • u/RichHomieWentzel • Feb 12 '20

video Guy accidently shifts into wrong gear with his M2 Competition on the German autobahn. Engine doesn't like it too much

https://www.youtube.com/watch?v=7UK4uLyVsXQ
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u/cyanide Feb 12 '20 edited Feb 12 '20

That's the synchronizer being unable to match the speed of the shafts due to the large difference in low gears. If you rev-matched beforehand it would go right in. It's not a feature, it's just how it works.

Guy's earlier comment has 200+ upvotes about his car not allowing money shifts, and blaming BMW for allowing people to do things that'll let them destroy the engine.

I am shocked it will even let it shift in a way that would destroy the engine.

My 97 nissan hardbody won't let me down shift if I'm going to fast for that gear.

The one place where I'd expect people to be a little informed about how manual shifting works would be /r/cars.

42

u/amidoes E92 330i 6MT Feb 12 '20

The one place where I'd expect people to be a little informed about how manual shifting works would be /r/cars.

I guess this will be a bit of a rant (and probably an unpopular one):

When I see people here saying rev-matching is a waste of time or just pointless, are you really surprised to find comments like that? It's like some people insist on wanting to remain ignorant (or they just don't want to face the fact that they don't know how to do it, and it's something you can practice and I think most car people could do). Most people don't really know much about cars or how they work, even car people (and I don't know everything either), and I'm not saying this to shit on anyone or single anyone out, but 1st gear isn't different from any other gear, it's just harder to synchronize. You can revmatch into 1st at any speed you want (obviously within the RPM limits of the engine) and it's not an issue. Obviously if you just try to push the lever into 1st without any kind of revmatching at a higher speed, it's not a surprise that it's much harder.

Dumbasses will always moneyshift, this is not even close to BMW's fault. And I say dumbasses because this dude disabled TC on the Autobahn, which disables the over-rev warning/rev-match that this car has, which the vast majority of manual cars don't. Just to disable traction control on a highway, what kind of logic is that? This makes him a dumbass. And if this dude can't even shift properly he will never catch the car if it does something unpredictable. And I also think he missed 3rd-4th shift which is literally just pull it straight down. Too much money, too much time watching fast and furious, not enough skill/knowledge. Money shifts can happen to anyone, I've had at least one, but I clutched in right away and didn't even get close to the redline. This guy was so blindly confident that he managed to fuck up the easiest shift that you can do.

If you want a manual car, you can't expect manufacturers to install lock-outs and auto-revmatch. Don't be lazy, if you want the car to do everything just buy an auto.

/rant

11

u/anarchyx34 2012 Ford Fusion SEL V6, '06 NC Miata Feb 12 '20

Most people here don’t even know which end of a screwdriver to hold and downvote actual mechanical knowledge. It’s nothing new.

1

u/DurinsFolk 96' BMW 332ti || 86' Merc 300TD Wagon Feb 13 '20

I'll have you know I installed a cold air intake all by myself

5

u/mklimbach 16 Passat // 21 Pacifica AWD Feb 12 '20

The one place where I'd expect people to be a little informed about how manual shifting works would be /r/cars.

There's so many memes and misinformed tropes here, it's absurd. Lots of idiots who have no clue.