I recently started having an odd steering issues with my 2015 AWD.

When on the interstate it requires constant attention to keep it in the lane. It continually wants to wander in either direction, no consistent direction. Many times it will pull over the crown on the center line. So if you're in the travel lane it will want to cross into the passing lane against the crown.

When coming to a stop, if there if the pavement is at all uneven it will yank to one side if you take your hand off the wheel. This happens right before a full stop so maybe 5mph and it's pretty extreme. I had a friend driving it last week and it scared the crap out of them when stopping at a light.

When driving around town I frequently get a seat of the pants feeling like the car is shifting to one side or the other. It feels like the wind blowing it.

Interstate driving at 80 simply feels sketchy a lot of the time.

Tires are Michelin Primacy MXM4 with about 6000 miles on them.

Tire pressure is 36psi on all 4.

No weird tire wear

I took it into the dealer last week and the toe was out on both sides in the front. They corrected it which didn't help much.

It goes back into the dealer next week.

I've put about 3000 miles on it since I bought it. I don't recall this happened after I first got it, although I may not have noticed it.

I'm curious if anyone else has experienced this. I really can't imagine this is normal behavior. Every other car I've had tracks straight even on uneven pavement.

Quote from what the tech entered into the Lexus maintain history.

 

I have a 2016 non f-sport that does the same thing.

The dealership did change all tires from Michelin to Hankook's a few weeks after purchase when I found out all 4 had flat spots causing vibrations in the car.

I've been waiting to get a new set after this coming winter to hopefully notice a difference in ride quality and steering wheel wandering, then maybe take it to the dealership again.

I don't have any other info on it, but I'm also one who experiences the same thing you've described. I wonder if anyone else has as well.

 

I wonder if you are referencing this thread?

https://www.clublexus.com/forums/gs-...ing-issue.html

 

Different issue I believe.

I did find this thread which seems similar. https://www.clublexus.com/forums/gs-...-the-lane.html

 

I know for a fact if your tyre are half worn you will get bad tracking some tyres are worse that others, the wider the front tyres worse it gets cheers.

 

I purchased a preowned 2013 RWD with 31K miles and required a lot of attention stay in a lane. (wandering aimlessly) I endured and did not inform the dealership, however, the second scheduled service the dealership advised to replace the two front tires soon. I purchased all four Yokohama tires. The old tires seemed to have sufficient tread; the problem was from center to inside tread not easily detected. Not only did it solve the wandering problem the road noise was significantly decreased from the original Bridgestone. I am not saying anything anything negative of the Bridgestone tires. They may be better and have less road noise just out of my budget range.


This is my first reply and by no means knowledgeable in this subject. I hope this is useful information to help solve your problem. I can only assume there are several issues that may produce similar symptoms.

 

I was thinking tires but these are almost brand new and I had them rotated which didn't change the behavior.

The toe was out on both sides at my first service appointment. The aligned it which helped a bit but it got worse again.

Took it back 2 weeks later and the toe was out again on both sides. They aligned it again. Same results

I'm going to have it checked again this week. If the toe is out again hopefully that's enough to convince them something is really not right.

 

Shows my ignorance ignorance on the subject I had to look up what toe was. I briefly skimmed the following article towards middle or end it refers to the toe out for front wheeled km just guessing all wheel would be included. Since since you had it repaired and it's back to the same symptoms. It refers to worn parts on the steering system. "Excessive toe out, which causes wander, may be accompanied by a feeling of sloppy, imprecise or unstable steering.

Steering linkage

The most common cause of toe-related tire wear is excessive clearance in the steering linkage or steering system. This includes a worn or loose steering box, worn pitman arm, worn steering link or worn tie rods on a traditional steering system". I learn something every day. Thank you.

https://www.tirebusiness.com/article...hile-in-motion