steering mystery

[klimford]

2020 Expedition, HD tow package. Replaced factory Hankooks with Michelin M/S. Big improvement in ride and handling with one exception. Occasionally when traveling 60 to 65 mph on smooth highway I'll feel a slight tug to the left, as if a tire was coming out of a trough in the road. This lasts only a second or two then back to normal. This will happen two or three times in 100 miles. Wife, who is usually right, thinks it must have something to do with the new tires while I suspect something amiss in the steering linkage. Any thoughts?

 

[Trainmaster]

Rotate the wheels side to side or back to front. That will tell you if it's the suspension or a tire belt.

 

[Soliyou]

2020 Expedition, HD tow package. Replaced factory Hankooks with Michelin M/S. Big improvement in ride and handling with one exception. Occasionally when traveling 60 to 65 mph on smooth highway I'll feel a slight tug to the left, as if a tire was coming out of a trough in the road. This lasts only a second or two then back to normal. This will happen two or three times in 100 miles. Wife, who is usually right, thinks it must have something to do with the new tires while I suspect something amiss in the steering linkage. Any thoughts?

Are you sure it is not your lane departure system pushing you back to the center of the lane??

 

[klimford]

Are you sure it is not your lane departure system pushing you back to the center of the lane??

That very well might be it. I checked and my system and it is set to medium and aid. But if the lane assist is the cause then I'm wondering why it wasn't evident in 18,000 miles with the original Hankook tires. Maybe because the Michelins handle so differently? In any event, I'll check it out next time I'm on a highway with lane markings (I live on gravel and blacktop roads with no lines).

 

[wakeboarder]

That very well might be it. I checked and my system and it is set to medium and aid. But if the lane assist is the cause then I'm wondering why it wasn't evident in 18,000 miles with the original Hankook tires. Maybe because the Michelins handle so differently? In any event, I'll check it out next time I'm on a highway with lane markings (I live on gravel and blacktop roads with no lines).

Maybe the tire installer pressed the button to turn it on.

 

[klimford]

The only way I know to access the lane alert is by toggling deep in the menu display readout and it doesn't look like you can turn it off, only adjust alert/aid sensitivity. Maybe there's a simple on/off button I don't know about? That would be good to know.

 

[Kudie]

I believe there is a button above center screen on my 21 limited to turn on and off

 

[Dewey3]

I believe there is a button above center screen on my 21 limited to turn on and off

This... The settings in the menu system is for the sensitivity. There is a dash button for turning it off and on, and if you turn it off, it will stay off until turned on again. So I would think like @wakeboarder as well... maybe the dealer turned it on when installing the new tires. Easy enough to check... just change lanes to left and to the right without using your turn signals, and you will get the "nudge" back to your lane.

 

[wakeboarder]

This... The settings in the menu system is for the sensitivity. There is a dash button for turning it off and on, and if you turn it off, it will stay off until turned on again. So I would think like @wakeboarder as well... maybe the dealer turned it on when installing the new tires. Easy enough to check... just change lanes to left and to the right without using your turn signals, and you will get the "nudge" back to your lane.

Just a note that he will need to be going greater than 45 mph.

Edit: corrected typo

 

[klimford]

I believe there is a button above center screen on my 21 limited to turn on and off

Exactly so. Thanks.