STX Wheels with 255/65R 17 Deullers

[2020FRL]

Just put these on like 4 days ago, been taking my little pup out for our ride every day. There is a stretch of I 70 from Loma to Mack that is grooved cement. It's like mile marker 10-16 or close to that, so almost to Utah.

Every time we cross this section, going in either direction, the truck seems to want to "follow" the groves way more than it did with the 18" Lariat wheels with 265/65R 18 Michelin's on it.

So my question is what causes this to be so much worse.

Wider tires?
Shorter tires?
Tread pattern?
Rubber compound of the different manufactures?


My guess is the narrower tires tend to "follow" the groves more.

It's not a biggie, got a little pucker the first time I felt it ... LOL ... but now I'm used to it and just ride it out. More of a curiosity thing than an issue. These tires had <50 miles on them and I love the look and ride, plus, the speedo error is so small, it's not even worth adjusting for.

If it is the width, might go to a size wider next time.

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[P. A. Schilke]

Just put these on like 4 days ago, been taking my little pup out for our ride every day. There is a stretch of I 70 from Loma to Mack that is grooved cement. It's like mile marker 10-16 or close to that, so almost to Utah.

Every time we cross this section, going in either direction, the truck seems to want to "follow" the groves way more than it did with the 18" Lariat wheels with 265/65R 18 Michelin's on it.

So my question is what causes this to be so much worse.

Wider tires?
Shorter tires?
Tread pattern?
Rubber compound of the different manufactures?


My guess is the narrower tires tend to "follow" the groves more.

It's not a biggie, got a little pucker the first time I felt it ... LOL ... but now I'm used to it and just ride it out. More of a curiosity thing than an issue. These tires had <50 miles on them and I love the look and ride, plus, the speedo error is so small, it's not even worth adjusting for.

If it is the width, might go to a size wider next time.

Hi Alan,

I have experienced this from time to time in my career at Ford. It can be the road or the tire or both. Tire construction is part of the equasion as is tread pattern...some treads squirm more the other on grooved highways. Tire pressure is also a player....are your tires inflated to the door label pressure? If yes...bump it up a couple psi and see if there is a change.

best,
Phil Schilke
Ranger Vehicle Engineering
Ford Motor Co. Retired

 

[2020FRL]

Kind of what I thought .... like I said, just didn't expect it.

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