Faint333

I just got 4 new Cooper Discoverer AT3 tires (my goodyear wranglers were horribly out of round) and now I'm getting a pretty decent vibration at highway speeds. It feels as though it intensifies on decelerating from 70-60. Also have noticed squeaking at different rates according to my speed. My guess is that when the truck was on the lift to get the tires swapped it pushed a borderline U joint over the edge? Does this sound like U joints? I don't think it's the tires. But any words of wisdom would be great.

craigt502

Sounds like it could be U joints...

In my old 1995 F150 my truck would shake/vibrate cruising 55-70mph but would smooth out when I let off the gas(going down a hill on the hwy), new U joints fixed my issue.

superccs

Front wheel toe or alignment will cause cupping or crappy wear on the tires...

Faint333

The old tires were out of round due to the belts coming apart. I probably should still get an alignment. It's been a while.

2000_f150_4X4

Try ujoints there cheep and easy to do your self.

Slammyz

I had the same problem! new u-joints fixed it all!!

Faint333

I wasn't that fortunate. I did the u joints tonight... Still vibrating, driveshaft?

97_4.6_stepside

Bent rim or axle?

Faint333

Wouldn't rim or axle be a constant vibration though? This is just 65-70.

papa tiger

Swap your tires front to back, see if you have instant improvement. Don't know your truck but probably just tierods and idler arm wear. Your old tires may have done a job on the shocks too. of course you don't need to replace everything. Just the worn parts and front end adjustment probably. Your shop knows in 5 minutes. Some big tires just bounce a little at certain speeds and you can try to rebalance them for that situation. Some you live with. If the problem is the tire and front end is good tire shop may need to replace it. Not all tires are perfect, after all, most tires arent in the aftermarket. The builder gets the a grade tires.