2011 M37X Tramlining

[Fuelguy]

I have a 2011 M37X that my wife will not drive. Unless you are on PERFECTLY flat road surfaces the car darts from side to side. When you add ice ruts or snow or rutted highways it is dangerous and it is almost always very difficult to go straight without constantly making steering corrections. The car has only 32,000 kilometers ( about 20,000 miles) and the original 245X50 18 Michelin Primacy MXM4 tires that show no signs of wear. The Infinity dealer recently checked all the suspension components and found the alignment to be within factory specs. They could only offer that I should call Infinity Canada.
I have entered a complaint to the NHTSA and am realizing that this is a widespread problem.
Is there a correction for this problem?
Will tire replacement help?

[sergio1987]

Hey, this is a known problem for the 2006-2010 M. And yes, changing the tires fixes the problem 100%. I had to replace my tires(Goodyear RSA) to a new set and it solved the problem, now the thing is that the new tires are Michelin MXM4 !!!! And they are amazing(4 Years so far).... In your case it may be something else, but I would start with changing the tires

[merlinq2]

I have a 2011 M37X that my wife will not drive. Unless you are on PERFECTLY flat road surfaces the car darts from side to side. When you add ice ruts or snow or rutted highways it is dangerous and it is almost always very difficult to go straight without constantly making steering corrections. The car has only 32,000 kilometers ( about 20,000 miles) and the original 245X50 18 Michelin Primacy MXM4 tires that show no signs of wear. The Infinity dealer recently checked all the suspension components and found the alignment to be within factory specs. They could only offer that I should call Infinity Canada.
I have entered a complaint to the NHTSA and am realizing that this is a widespread problem.
Is there a correction for this problem?
Will tire replacement help?

I have been chasing down this issue in my 07. New tires Conit's and these did not eliminate the issue, made the issue more livable. I think any big heavy car or 4 wd truck will have tracking issues especially when they are driven on the crappy roads in Canada magnify the issues. I have my snows on now and the car is a beats to drive - my snows are a little wider than the summer tires, so more susceptible to track to imperfections in the road.
I do not believe the tires are the solution, I believe the overall track of the car and the overall geometry of these heavy large cars is the issue. I would not call it a design flaw, I would call it perfect world engineering applied to an imperfect real world.
Now; when I drive on the 407 (majority of it concrete highway) the track tracks 100 % better than it did with my old summer tires. When I drive on the SH***Y 401 the car wanders and follows all of the ruts and impressions etc, causing me to have to adjust often. I believe this to be a condition poor road surfaces and years of government neglect – stretch between Cambridge and Port Hope is terrible and dangerous.
Infiniti Canada will tell you that there is nothing wrong with the car- and frankly there isn’t- We do not hear about these issues with the G and EX lines!- I am not aware of reports of tramlining in the EX or G.
But what is interesting is that new Electric steering system in the Q50s- that provides the driver with a baby sitter to make steering inputs to the car without the driver knowing. I think the wider and lower the profile tires that you apply to a car the more you notice poor tracking.
Next time you take the car in for service have them print out the alignment and share it- this report will tell you how straight the car is and therefore how straight it will track - I used three different alignment shops and no one could dial it in any closer than the car is right now.
Tire swap might help but not worth the cash for just a hunch.
Having said all that, you will have to live with it or trade out to G37/Q50 or get a car like an ES or Caddy- those cars drive perfectly straight.
Good luck

[uhomebody]

I recently purchased a used 2011 M37X. Tramlining is terrible. Finally took it in to the dealership today (6 weeks after purchasing, less than 900 miles driven) to have them take a look. They said that it is due to low tread on the front two tires. He said the tires have lots of tread left but have worn a bit wear these cars do start to go all over the place.

My question is, the tires that are on it are Hankook Ventus S1 Noble2. Back tires have a ton of tread left, front he said need to be replaced if i want tramlining to disappear. Do I replace with two new Noble2? Or do I bite the bullet and get 4 new that will ultimately do a better job of eliminating the tramline?

What I don't want to do is replace the front two and have the problem continue. Any feedback/input is greatly appreciated!

[Frog]

I put new Michelin pilot sport plus and the problem has been gone for 20k miles. For me it was the tires 100% my tread is still at 8/10 maybe that's why it's not back, it was present at 13k on the original tires. Car is a 2011 m56s