Replacement Tire Problems on 3.8

[Bill Georgia]

Had the Hankook's replaced with the Michelin Primacy MXM4's. Per the recall they are suppose to force balance all 4 tires and set them up on the car in specific location, front right or left back right or left according to how they turn out after the force balancing. I found that the Michelins road fairly bad in comparison but lessening the PSI helped a lot, set at 31PSI @ 60ish degrees out side, and now they feel pretty good all around. I still do get some of that "flat spot" feel for about 6 blocks as I did with the Hankook's, I just keep wondering if it has something to do with the continuously variable dampers that are part of the shocks. They are controlled at all times, if I get the stability control turned off quick enough it seems to go away - hard to verify though.

Yes, continuous variable damping is only on the V8 Ultimate.

 

[CanukV6]

Well the latest on my car is that I returned it to the dealer yesterday for Wheel Balancing #3. They called me in the afternoon to say that despite them re-balancing the wheels, re-calibrating their wheel balance machine and them balancing all 4 wheels again, the highway speed vibration is still there.
The dealership General Manager has the same car and they had not yet done the tire swap so he still had the original Hankooks. So one by one they put a Hankook shod wheel/tire on my car starting with the right rear and road tested it after each installation. Right from the change of just one wheel there was a noticeable improvement and with each additional wheel it got better until with all 4 changed the vibration disappeared altogether!
Not a permanent solution, but proof that the problem lies with the Michelins.

Next step is to involve the Area Hyundai Service Rep to decide on the next move. Either another set of Michelins (which I doubt will solve the problem) or try some other brand or type of tire. I told them if they wanted to swap for a set of new 19" wheels with the Continental tires sitting on a 5.0 in their lot, I would be OK with that

 

[Ernie3647]

I’ve had the Michelins on my car now for a couple of months through all types of driving. I had these same model tires on my 2007 G35X for about 2 years. Never had any complaints about them. Like I said in a prior post I did notice a difference from the Hankooks when first installed but it was minimal and to be perfectly honest they appear now to have better wet traction than the Hankooks. They performed very well on my G35X also. I am only saying this because I don’t believe it to be a design flaw in the tires. Maybe just bad run of tires.

 

[CanukV6]

I’ve had the Michelins on my car now for a couple of months through all types of driving. I had these same model tires on my 2007 G35X for about 2 years. Never had any complaints about them. Like I said in a prior post I did notice a difference from the Hankooks when first installed but it was minimal and to be perfectly honest they appear now to have better wet traction than the Hankooks. They performed very well on my G35X also. I am only saying this because I don’t believe it to be a design flaw in the tires. Maybe just bad run of tires.

I agree with you. I have also had these same Michelin tires on my 2012 Genesis and they were fine. On the other hand, its hard to imagine that 2015 Genesis owners in different parts of the USA and Canada who have reported this problem, are getting replacement tires from the same 'bad batch'. The fact that it seems to be worse on HTRAC cars makes me wonder if there is a resonant frequency produced by the AWD drivetrain that sets off a vibration in the tires.

 

[Ernie3647]

My prior G35X was an AWD car as is my Genesis. I would say that maybe it’s unique to the HTRAC system but mine is an HTRAC. Wouldn’t it affect all the V-6 HTRACs if they were all bad tires?

 

[Alwaysforward]

...The dealership General Manager has the same car and they had not yet done the tire swap so he still had the original Hankooks. So one by one they put a Hankook shod wheel/tire on my car starting with the right rear and road tested it after each installation. Right from the change of just one wheel there was a noticeable improvement and with each additional wheel it got better until with all 4 changed the vibration disappeared altogether!
Not a permanent solution, but proof that the problem lies with the Michelins.

I would have them go one step further. Have them install your tires on the wheels from the other car (one at a time) and see if the issue could possibly be one of the wheels. Just a thought...

 

[CanukV6]

I would have them go one step further. Have them install your tires on the wheels from the other car (one at a time) and see if the issue could possibly be one of the wheels. Just a thought...

That thought had occurred to me also. The wheels were fine with the original Hankooks, but with the tire changeover, who knows if the wheels might have been distorted during the process. It wouldn't say much for the strength of the wheels and since others are having the same problem I doubt it is an isolated mis-handling issue.

 

[ckon]

That thought had occurred to me also. The wheels were fine with the original Hankooks, but with the tire changeover, who knows if the wheels might have been distorted during the process. It wouldn't say much for the strength of the wheels and since others are having the same problem I doubt it is an isolated mis-handling issue.

Mine is in for service right now.

One of the things they did was dismount the tires from the rims so they could properly match the rim markings and the tire markings to maximize the balance. I think this was a smart thing to do, but I also don't have any confidence that it will fix the intermittent vibration.

There are sunroof parts ordered and I'm supposed to get the car back Tuesday so I'll report back again after that. Wish me luck.

 

[accordn2ryan]

Just drove off in my new 3.8 Ultimate Genesis yesterday, and noticed the tires were the Michelin's. I'm assuming they won't be replacing these tires for free since they aren't Hankook's?

 

[TroyK]

Just drove off in my new 3.8 Ultimate Genesis yesterday, and noticed the tires were the Michelin's. I'm assuming they won't be replacing these tires for free since they aren't Hankook's?

i'd say that's a safe assumption!

______________________________

Help support this site so it can continue supporting you!

 

[CanukV6]

Just drove off in my new 3.8 Ultimate Genesis yesterday, and noticed the tires were the Michelin's. I'm assuming they won't be replacing these tires for free since they aren't Hankook's?

I would think that all new in-stock vehicles are being fitted with the Michelins before delivery, assuming that the change hasn't already been done at the factory. Let us know how you find the tires with regard to any abnormal vibration and flatspotting after being parked for a period.

 

[TroyK]

I would think that all new in-stock vehicles are being fitted with the Michelins before delivery, assuming that the change hasn't already been done at the factory. Let us know how you find the tires with regard to any abnormal vibration and flatspotting after being parked for a period.

i took delivery of my 2015 htrac memorial day weekend and it still had the hankooks on it. since it's not a recall i don't think the dealerships are automatically putting on the michelins before delivery. the dealerships seem to wait until you bring the car in for maintenance or actually put in a request to get the tire swap done. fwiw...through myhyundai web site, you can schedule the tire swap out with your favorite dealership.

 

[accordn2ryan]

I would think that all new in-stock vehicles are being fitted with the Michelins before delivery, assuming that the change hasn't already been done at the factory. Let us know how you find the tires with regard to any abnormal vibration and flatspotting after being parked for a period.

Is the abnormal vibration issue only with models that are equipped with AWD?

 

[CanukV6]

i took delivery of my 2015 htrac memorial day weekend and it still had the hankooks on it. since it's not a recall i don't think the dealerships are automatically putting on the michelins before delivery. the dealerships seem to wait until you bring the car in for maintenance or actually put in a request to get the tire swap done. fwiw...through myhyundai web site, you can schedule the tire swap out with your favorite dealership.

Interesting. My advice is to hang onto those Hankooks as long as you can. I wish I had .

 

[TroyK]

Interesting. My advice is to hang onto those Hankooks as long as you can. I wish I had .

i'll probably hang onto 'em until they are worn down somewhat. what i should do is visit the dealership and drive one of the htrac cars that came from the factory with the michelins to see if i can detect any difference in ride comfort/noise...etc.

 

[ckon]

Is the abnormal vibration issue only with models that are equipped with AWD?

As far as I can tell there have been one or two complaints from RWD owners, but most are from AWD folks. If anyone has evidence that that's not the case I'd like to hear from them.

 

[hamrules]

The wheels have already been "excused" because the vibration goes away after a couple of miles. They are pretty convinced that it's just an application problem with the tires - meaning that the car is just a bit on the heavy side for the range of the tire and that fact seems to encourage flatspotting. I've been a bit uncomfortable with the diagnosis, but can't really say it's wrong. However, now that Corporate is officially involved I'm confident that, whatever the cause, it will be fixed to my satisfaction.

I am beyond impressed with the speed of Corporate's reaction. I used to work for IBM and it was famous for the complete, fast responses to customer complaints, but HMA has them beat by a mile, at least in this particular case.

After they put the michlens on it still has that vibration or I think it's called porpoising for a mile or so after sitting. I find it very hard to believe these ties same as the originals do the same thing. The combined load rating of the tires is way above the total GVW of the car. Changing drive mode changes how it feels. I really think it's some driveline / suspension issue. Like what's that one electrically controlled mini shock from the frame to the left lower arm in the back do? I just have doubts this is a tire issue.

 

[ckon]

After they put the michlens on it still has that vibration or I think it's called porpoising for a mile or so after sitting. I find it very hard to believe these ties same as the originals do the same thing. The combined load rating of the tires is way above the total GVW of the car. Changing drive mode changes how it feels. I really think it's some driveline / suspension issue. Like what's that one electrically controlled mini shock from the frame to the left lower arm in the back do? I just have doubts this is a tire issue.

We don't have variable shocks, but I think it seems more logical that it's in the unique AWD parts of the drive line. We have many parts not present in RWD cars and additional weight - any of which may be contributing to the issue. It's a helluva mystery.

 

[goodgeorge]

I'm having that same not-really-balanced vibration with the replacement Michelins. Dealership is trying the rebalancing this week. We'll see.

 

[Monolith2001]

I just had mine replaced Saturday (25,000 miles) and all is well. I was going to run the Hankooks to 30,000 but the car was out of alignment and the tires were wearing uneven so I had to pull the trigger a little early. Hankooks were getting noisy as well. My car is a RWD.