So I did put new shoes on the tl. Had no shimmy shake or anything prior to replacement. Put the fallken Ziex 950a/s on same size. Balanced and alignment completed. First day threw a weight rear left. Went back and had them rebalanced. I'm thinking tires are not good meaning out of round. The shake is above 80 but it doesn't change with speed. It can be felt at 70 but not bad. Oh and in the morning or night on the way to or way home from work. So car has been siting for a while. Then it can be felt at 35/40, not felt at 35/40 when tires are warm like after drive to or from work. when I first start driving in the morning or night. As the car travels down the road the tires heat up and I feel less shaking. Not shaking in steering wheel. Feels like the rears as the shaking is in the seat of my pants. Going to go back to tire shop. Wanted your opinions. Yes searched the forums. Not suspension. Possibly comp. bushings. Not axles I don't think. Mills on car currently sit at about 117500 and is a 07 tl base.

 

Maybe you just need tire alignment. I also felt shaking at about 90km/h. I did tire alignment on my winter setup 2 months ago. It appeared that one of wheels is out of specs. I thought the rim need to be repaired, but guy in service just moved the tire on the rim about 90 degrees and the whole weel came back to specs. Now shakes are almost unnoticeable.

 

See you're in Florida, not certain as to where, but classic flat-spotting when tires are cold after sitting. That should clear up in a few miles, but the Yokohama tires on our '04 takes several miles before the thumping stops. The high speed vibration is probably due to an out of balance condition. Have found that the TL is a bear at times to get perfect. Referencing our '04, the only fix was to have them balanced with a Hunter Road Force balancer and even had to use the lug hole adapter rather than a cone in the center.
You can have the shop balance a wheel/tire assembly then rotate it 180 degrees then rebalance. It should be fine, but if out, the equipment could be out of spec.

Locations:
https://www.hunter.com/gsp9700

 

I had the cars alignment done when I replaced the tires. I would never replace tires and not have an alignment. As for flat spoting, I don't remember my primacy mx4 do this flat spotting.

 

Some tires are more prone to flat spotting than others. The Primacy MXM4 is an entirely different class of tire than what you put on. It is also possible that the tire balance machine is out of whack at the shop you went to.

 

Unless you're aware of an alignment problem, it's a waste of money to have it done at every tire replacement. Geez, our '08 knock-around car with 283,000 miles has had one alignment and the '04 TL wouldn't have had any until the body shop took it on their own to do an alignment, screwed it up and had to have it redone at Acura.

 

Go to a different tire shop if the one they put on fell off. They must have used cheap stick ons or they didnt clean the area properly. They also need to make sure the wheel is mounted correctly on the balancer.

 

Sure. But the tire has to, I do not know how to write it correctly in English, lie down on rim. When it does, the whole weel might become unaligned, and need realignment (including moving tire on wheel by xx degrees).

 

Moving the tire on the wheel itself is related to balancing, not vehicle alignment.

 

Right - balancing is the right word 🙂