SL/R230: Passenger seat shakes rapidly at moderate speeds
Thread Starter
Member
Joined: Sep 2018
Posts: 115
Likes: 7
From: Dallas
2005 SL65 AMG, Motorcycle
Passenger seat shakes rapidly at moderate speeds
Hello, I have had my SL65 AMG for some time and always noticed the passenger seat shake at moderate speeds (50+ mph). Is this a common issue or perhaps I have a mounting bracket that is loose on the seat?
I have had the car for 1.5 years it is just one of those things that drives me crazy. I usually do not have a passenger in the car but it happens if someone is seated as well. Is this common or am I alone in this and do any of you have a suggestion on what to check?
I have had the car for 1.5 years it is just one of those things that drives me crazy. I usually do not have a passenger in the car but it happens if someone is seated as well. Is this common or am I alone in this and do any of you have a suggestion on what to check?
Member
Joined: Sep 2017
Posts: 96
Likes: 12
SL55 AMG
I seem to have a similar vibration at 60mph+. Passenger seat and rear view mirror shake and you can feel the vibration in the floor board. I've got all new mounts, new tires freshly balanced, new brake pads/rotors, and new driveshaft flex discs and still haven't solved it.
Thread Starter
Member
Joined: Sep 2018
Posts: 115
Likes: 7
From: Dallas
2005 SL65 AMG, Motorcycle
I seem to have a similar vibration at 60mph+. Passenger seat and rear view mirror shake and you can feel the vibration in the floor board. I've got all new mounts, new tires freshly balanced, new brake pads/rotors, and new driveshaft flex discs and still haven't solved it.
Member
Joined: Jan 2018
Posts: 152
Likes: 36
From: Nashville Tn
2011 mercedes sl550, 1995 corvette
Even though tires look to be in good shape and they have been balanced, it is very likely the vibration is the result of a problem in one or more tire/wheel assemblies. There are many different type wheel balancers, most only as good as the operator and limited in what they can do, but there is only one balance system that can measure road force and match the tire position to the rim to achieve the optimal road force and balance with minimum amount of weights. This machine can also measure wheel runout and match tire position to get the best tire/wheel outcome. Search “Hunter road force balancer” to get further details and find a location near you that has this balance system. You won’t regret it
Member
Joined: Sep 2017
Posts: 96
Likes: 12
SL55 AMG
Even though tires look to be in good shape and they have been balanced, it is very likely the vibration is the result of a problem in one or more tire/wheel assemblies. There are many different type wheel balancers, most only as good as the operator and limited in what they can do, but there is only one balance system that can measure road force and match the tire position to the rim to achieve the optimal road force and balance with minimum amount of weights. This machine can also measure wheel runout and match tire position to get the best tire/wheel outcome. Search “Hunter road force balancer” to get further details and find a location near you that has this balance system. You won’t regret it
Thread Starter
Member
Joined: Sep 2018
Posts: 115
Likes: 7
From: Dallas
2005 SL65 AMG, Motorcycle
Even though tires look to be in good shape and they have been balanced, it is very likely the vibration is the result of a problem in one or more tire/wheel assemblies. There are many different type wheel balancers, most only as good as the operator and limited in what they can do, but there is only one balance system that can measure road force and match the tire position to the rim to achieve the optimal road force and balance with minimum amount of weights. This machine can also measure wheel runout and match tire position to get the best tire/wheel outcome. Search “Hunter road force balancer” to get further details and find a location near you that has this balance system. You won’t regret it
Member
Joined: Sep 2017
Posts: 96
Likes: 12
SL55 AMG
Thank you Ray. I suspect it could be a balance issue on my vehicle because my car has negative camber. Previous owner bought oversized wheels which look great and fit into the wheel wells but unless I go with a widebody kit they will never sit with neutral camber. That is likely the cause... Thank you for your responses.
