So, I worked at an indie Euro shop @ 20 years ago. They also had high volume used sales. They had a tire siper that we all used. I don't care how well the tire is made, they all start going out of round as they accumulate miles and varying road conditions. You can balance a tire 6 ways from Sunday and it still won't provide the smoothness of a trued tire that's then balanced.

BTW, this is not new technology. Caddy dealers all the way back to the early 60's had them as part of their 'smooth-ride' wheel service which included balancing the wheels/ tires on the car.

I know, i know!
everything goes out of whack.
gets egg-shaped.
Tires are no different.
Thanx!

i used to have RA-1 shaved for my old racecar and at least AIM tire would not shave a previously used tire due to rocks or other debris embedded in the rubber. It would kill their cutting surface, as would a flat spotted tire where the blades would skip and then make contact again the 1st few runs by said flat spot.

For some slight thread drift ...
Adventures in tire shops around here....
You folks that live on the West Coast with a Les Schwab tire store near you,- do not know how well off you are !
45 min and you are in and out! All 4 are mounted, balanced and done.
I miss those guys!
Here?
"We aint never seen a ting yike dat beefore!!"
It is an all-day affair here to get almost anything done.
One has to schedule, not just drive in.
They have to order tires for your car..unless you want something made from 40 years ago.
These alleged tire shops have made me way too much of an expert on the tire subject.

A couple of years ago I took just the four wheels in as I learned not to trust them with overzealous impact wrenches, the hard way. ( I had to BURN the lugs off)
They mount the tires whilst my breath is being held that nothing too much else goes wrong from here...
OHhhh....... But it did.
I watch them relearn how to mount 4 new tires today. Its that was every new day. (It was s struggle for some simple Honda 16-inch wheels)
An hour half later they come out and ask me to pay the bill.
Again, I said " I need them balanced too"" ( I could see through the window that they did not)
At this point, he admits his tire balance machine has been broken for a while and no one really needs it done anyways.
I got to pay for the whole price with no balance , they, not even having to remove and install them on the car!

That was when I went into the tire business for my own self. (just my vehicles)
So, I bought a used tire machine (400.00) and a balance machine (200) as I just could NOT take the stupid anymore!

Last time I had a set of tires shaved (20 years ago), the tech put it on a machine that had a bar on the tread side. He used a tool like a woodworker would, to shave the tire down.

I went by a couple months ago and they are no longer there.

Good for you. I almost did but didn't have the room. I think you can dynamically balance tires with a bubble balancer and a fixture made up to hold the tire vertically to move the weights already installed in and out as needed.

But to trim them out for 70 MPH you need to spin them on the car with an old Hunter strobe balancer. I love a perfectly balanced car and there is one guy here in an area of a million people that can do it. He has a patent and does work for Bonneville cars. Particularly 300+ MPH bikes.

Yes, I use a spin balancer.
Is a small one and fits my two-car garage ..but I will admit I could use more room.

If you call around there will be at least one in a good sized town. I have a Yukon Denali that has to have round tires or the Chevy Shake starts up. I will true a Michelin or Bridgestone any tire that goes on that car gets trued. New tires mounted, trued then balanced on the car. Good for about 35K miles. After that the vibration starts at about 70-80 mph.
At that point the tires are about 1/2 gone. Not worth truing again. New tires and start over again.
But, trued and balanced tires will give you the best ride you will get.
Also, that planer idea sounds really dangerous to me. Don't try and true a wet tire.

Not anymore dangerous than planing wood and hitting a knot^^^^^ I did forget to mention I spray Pam cooking spray on the planer metal flat surface so the tire tread doesn't grab it

A few sets of tires ago I got a pair from tire rack that were obviously shaved because half the tire was new and half was clearly scrubbed off. I wasnt too thrilled about it but they were fine and didnt shake. I certainly wouldnt shave a new set just because. They are not hand made bias plys anymore its 2023 technology is quite good. That said id try a belt sander before a planer

This is what I use, they come under several different brands, even Snapon, and work very well.
They are fairly light. They can be found rather cheap.
I have it and the tire changer on a wood wheel carts (HF) so I can shove it and the tire machine back in out of the way when done.

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