Rough Ride (rear)

[10genesis]

I had the same problem with the rough ride in my 09 first build 4.6. Drove a 2010 4.6 noticed a big difference, ended up trading in for the 2010, so far with 27K miles, no complaints. Live in S Florida, the roads are pretty smooth.

 

[Amalowze]

This is a informational post not a post for complaining or to get comment.

This morning the SACHs Shocks were removed from the car. They were tested individually. The shocks are NOT THE PROBLEM. For information purposes ans to prove they were removed the number on the shock is 55311 3M801. The car was then lowered and the stiffness of the rear was tested without shocks by having 1 then 2 then 3 burly guys sit on the rear trunk. The springs alone are so stiff that 1 moved it less than 1/8 inch 2 about 3/8 and 3 no quite a half. They bounced up and down, all are suspension techs at a alignment, shock specialty service center, their comments: whoa this baby is stiff and hard.

Added info: the specification for my 3.8 says the springs are color coded either (skyblue-skyblue) or (Skyblue-Pink) mine have a different color code on one spring and the other is not paint coded at all.

Shocks replaced, Ride unchanged. Next step new springs. That will occur this week. PS bushings inspected OK.

I just bought a 2013 Genesis sedan 3.8L, and I am not happy with the ride. It's too harsh, the suspension is too stiff for a luxury car of this class and for the price of 40,000 dollars. I test drove the car around the dealership which has all new roads for up to 15 miles radius, so the car seems to ride great till it encounters pot holes, expansion and tar strips, bumps and unevenness on the road and it transmits all that roughly into the passenger in the car without any attempt to absorb the shocks, which I found out after buying the car.

Don, may I please have the shop you took yours to for testing and replacement of the springs for softer ones? . If that was done, could you furnish us with the current state of the ride, if it rode better, and how i can have the same springs put on mine and cost? thanks

 

[PMCErnie]

I just bought a 2013 Genesis sedan 3.8L, and I am not happy with the ride. It's too harsh, the suspension is too stiff for a luxury car of this class and for the price of 40,000 dollars. I test drove the car around the dealership which has all new roads for up to 15 miles radius, so the car seems to ride great till it encounters pot holes, expansion and tar strips, bumps and unevenness on the road and it transmits all that roughly into the passenger in the car without any attempt to absorb the shocks, which I found out after buying the car.

Don, may I please have the shop you took yours to for testing and replacement of the springs for softer ones? . If that was done, could you furnish us with the current state of the ride, if it rode better, and how i can have the same springs put on mine and cost? thanks

GripperDon hasn't posted here in 2 years. He owned an '09 model. You could send him a PM. Maybe he is still around.

If your car is brand new, be sure to check your tires. No need to set them above 32-34 psi.

 

[Amalowze]

GripperDon hasn't posted here in 2 years. He owned an '09 model. You could send him a PM. Maybe he is still around.

If your car is brand new, be sure to check your tires. No need to set them above 32-34 psi.

I have already lowered the tire pressure to 30psi and I'm leery about putting extra weight in the trunk for a better ride and losing out on gas mileage. This is a brand new car, nothing really must be done to have a happy ride.

I will inbox GripperDon see if he will respond. I also intend to email Hyundai Motors USA and see what they say. Thanks though.

 

[Mark_888]

I just bought a 2013 Genesis sedan 3.8L, and I am not happy with the ride. It's too harsh, the suspension is too stiff for a luxury car of this class and for the price of 40,000 dollars. I test drove the car around the dealership which has all new roads for up to 15 miles radius, so the car seems to ride great till it encounters pot holes, expansion and tar strips, bumps and unevenness on the road and it transmits all that roughly into the passenger in the car without any attempt to absorb the shocks, which I found out after buying the car.

Don, may I please have the shop you took yours to for testing and replacement of the springs for softer ones? . If that was done, could you furnish us with the current state of the ride, if it rode better, and how i can have the same springs put on mine and cost? thanks

I have an early 2009 and did the same thing as Gripper Don. I replaced my early 2009 suspension with the 2010/2011 version. The various suspension versions are as follows (all years apply to model year, not calendar year):

• Early 2009 - Quite bad. Springs are too stiff and overpower struts and shocks
• Late 2009 - Minor improvement made mid-year
• 2010-2011 - Changed specs on struts/shocks, springs, and anti-sway bar. Noticeable improvement
• 2012+ - Changed struts/shocks, springs, and new hollow anti-sway bar. Michelin Tires on all but Base Model. Much improved and much more comfortable than before. Very few complaints, although the R-Spec is much more firm.

If you have a 2013 and have the 3.8 Base Trim Model, then you need to switch out the horrible Dunlop OEM tires. Since the Base Trim model has 17" tires, I would recommend the Michelin Primacy MXV4 (not MXM4), which you can get in H or V speed rating. H is probably a little softer.

If you don't have the OEM Dunlop tires on the Base Trim model, and you think the ride is harsh, and your tires are not overinflated, then you need to get a different car. The Genesis is just not for you. Your problem is nothing like what we faced in 2009.

 

[Amalowze]

I have an early 2009 and did the same thing as Gripper Don. I replaced my early 2009 suspension with the 2010/2011 version. The various suspension versions are as follows (all years apply to model year, not calendar year):

• Early 2009 - Quite bad. Springs are too stiff and overpower struts and shocks
• Late 2009 - Minor improvement made mid-year
• 2010-2011 - Changed specs on struts/shocks, springs, and anti-sway bar. Noticeable improvement
• 2012+ - Changed struts/shocks, springs, and new hollow anti-sway bar. Michelin Tires on all but Base Model. Much improved and much more comfortable than before. Very few complaints, although the R-Spec is much more firm.

If you have a 2013 and have the 3.8 Base Trim Model, then you need to switch out the horrible Dunlop OEM tires. Since the Base Trim model has 17" tires, I would recommend the Michelin Primacy MXV4 (not MXM4), which you can get in H or V speed rating. H is probably a little softer.

If you don't have the OEM Dunlop tires on the Base Trim model, and you think the ride is harsh, and your tires are not overinflated, then you need to get a different car. The Genesis is just not for you. Your problem is nothing like what we faced in 2009.

I do agree with your assessment. However, this car has already been purchased. So essentially am stuck with it, if I am not willing to lose 9K for a trade in
I don't have the base model, the tires are Michelins and not over inflated. Since Don experimented and found the springs to be too stiff, I was looking to see if I can swap them out with those of a ford crown victoria or buick lacrosse. The combination of the harsh ride with the high car payment is making the whole dealing very unappealing. So my request was asking if anyone ever found a way to actually soften the ride just to be able to absorb the bumps and road roughness instead the passenger getting them all.

 

[Mark_888]

I do agree with your assessment. However, this car has already been purchased. So essentially am stuck with it, if I am not willing to lose 9K for a trade in
I don't have the base model, the tires are Michelins and not over inflated. Since Don experimented and found the springs to be too stiff, I was looking to see if I can swap them out with those of a ford crown victoria or buick lacrosse. The combination of the harsh ride with the high car payment is making the whole dealing very unappealing. So my request was asking if anyone ever found a way to actually soften the ride just to be able to absorb the bumps and road roughness instead the passenger getting them all.

Gripper Don and myself (and a few others) swapped out our 2009 suspensions for later Genesis model suspensions. If you have a 2012 or 2013 you have the latest (I am pretty sure 2012 and 2013 suspensions are the same). All of Don's comments about springs being too stiff apply to the 2009. The 2012-2013 springs are much softer.

Regarding aftermarket suspension parts (springs, rear shocks, front struts, anti-sway bar) I don't think you will find any replacements that are softer. There are some threads in this forum about some who installed after-market coil-overs from Bilstein, but I am pretty sure those were stiffer than stock.

No, you cannot swap out suspension parts from a Ford Crown Victoria or Buick Lacrosse.

There are some tires on the market that are softer than you Michelins, and maybe that might help some. The only other things I can suggest is to have a dealer look to make sure there is not something wrong, or test drive a demo for comparison to make sure yours is the same as other of same model year.

It has been made absolutely clear by John Krafcik (HMA CEO) that the goal was to make the Genesis much firmer than American Luxo cars, and also firmer than Lexus. He has publically stated this in several interviews, some available on video (try YouTube). There is a version of the Genesis sold in Korea that has an air suspension, but it is probably not feasible to have that installed on your car. The Equus has an air suspension, and you probably would like the ride on that car.

Regarding how firm the suspension should be on a $40,000 car, I wonder if you have driven a BMW 5, or Infiniti M.

 

[Plateblock4?]

My 2013 3.8 sedan rides very ruff, l feel every bump.