Acceleration Vibration at 60-70mph on 7th Gear only
Thread Starter
Junior Member
Joined: Jun 2005
Posts: 60
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Acceleration Vibration at 60-70mph on 7th Gear only
Hi,
My car is an 07 Cls 550. I have this strange problem for about 10kmls now. The conditions that lead to the vibration must be the following
- Driving on the highway and the car is on it's last gear (i guess 7th). Speed is around 105km/h (62mph). RPM is at 2000rpm
Description:
When you accelerate from 62mph to 72mph (rpm 2000 to 2500), you can feel a light vibration (no noise..) on the floor. Past 72mph, no more vibration even if the car is accelerating. Acceleration must be done without the need of downshifting. When crusing, car is perfect. When on other gears, same RPM, car is perfect. When going WOT, car is perfect.
Just read the car with SDS, no codes so far...
Anyone has an idea ?
Thanks
My car is an 07 Cls 550. I have this strange problem for about 10kmls now. The conditions that lead to the vibration must be the following
- Driving on the highway and the car is on it's last gear (i guess 7th). Speed is around 105km/h (62mph). RPM is at 2000rpm
Description:
When you accelerate from 62mph to 72mph (rpm 2000 to 2500), you can feel a light vibration (no noise..) on the floor. Past 72mph, no more vibration even if the car is accelerating. Acceleration must be done without the need of downshifting. When crusing, car is perfect. When on other gears, same RPM, car is perfect. When going WOT, car is perfect.
Just read the car with SDS, no codes so far...
Anyone has an idea ?
Thanks
Senior Member
Joined: Nov 2012
Posts: 357
Likes: 97
E63 S AMG, CLS550 4matic, C63 Ed 507, Volvo XC90 T8s
Wonder when was the last time you did tire and wheel balancing. Did you get it done at a shop with a road force balance machine. I had a similar experience on a different car with new high performance winter tires and it required road force balancing before it would settle down. Vibrations only at 65-75 mph, not above and not below.
