Are These Common C400 Issues?

omniphil

Member
I just picked up a C400X (Former C600 Sport owner). I have noticed some oddities that I don't have with my other scooters and was just wondering if they are normal on this platform...

1. Front Brake Lever- You have to pull this quite far to get it to start working unlike the rear brake lever. (This seemed to be a common issue seeing other posts)

2. Loud Resonance Noise - Right at 20 mph if I let off the throttle enough so that I stay cruising at 20 mph there is a very loud groaning noise that sounds like some sort of resonance in the front area of the scooter. I thought this was some sort of airbox noise, but the air box isn't in the front of the scooter.

3. Vibration While Cornering - When going straight the bike is very vibration free (Except the pulsations from the engine) however when I corner to either side there is a vibration that shows itself. It's at a different frequency than the engine. It's easily noticeable.

I also have a bad seat latch and the scroll wheel is broken, those will be fixed by the dealer at the first service.

I haven't seen anyone experimenting with lighter CVT roller weights yet (Or even seen any available to try).
This is usually the first thing I do to my scooters as it really wakes up the acceleration with no loss in top speed.
 

omniphil

Member
Just to add to this...

1. I noticed the 2022 C400X mentioned something about changes to the braking system. (I wonder if this is due to the inconsistency of the 2 brake levers)

2. and 3. I just got my C400 back from the dealer to fix these vibrations issues. There is a bulletin out on it from BMW.
 

Donnus

New member
Just to add to this...

1. I noticed the 2022 C400X mentioned something about changes to the braking system. (I wonder if this is due to the inconsistency of the 2 brake levers)

2. and 3. I just got my C400 back from the dealer to fix these vibrations issues. There is a bulletin out on it from BMW.
2: do you have the bulletin number ?
 
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