Shops that will balance Fuch's w/weights on back of rim

[Gordo2]

Searched archives on this. Lots of info, nothing specific on places to have it done:

Interested in cleaning up my Fuch's. Would like to remove weights on outer ring and re-balance with weights on the back of the wheels.

Will most tire chains do this if you ask them to? Where should I bring it to have it done?


Thanks, Gordo

[RJ Gilliam]

Any tire chain will do this without a problem. Installing the wieghts on the insdie is normal practice for any type of rim. Just ask them to....

[bennydean]

My 1973 VW Superbug has 914 style wheels and I hate the fact that the weights have been mounted on the outside of the rim. It looks completely crap, but I was told there was a reason for it being done this way. Is this not the case?

[Roland Kunz]

Hello

You can run into problems if you work with the hiden matching methode.

The problem is that you have to add much more wight inside then you would need on the outside.

Grüsse

[bennydean]

I had been told in the past that it couldn't be done, but had never been given any reason. Roland, your statement about mounting weights on the inside of the rim requiring additional weight, does not sound unreasonable. However I will definitely look into further next set of rubber.

Thanks again.

[john walker's workshop]

tire balancer machines tell you to put X amount of weight on both the inside and outside and where to put it. if you put it all on the inside, it can be close, but not correct. some people want form over function, others, function over form. chose your poison.

[island911]

My take on it is this: For any unbalanced wheel-tire there is one place where one counter weight will balance the wheel.

Much of the time this is nearly center between the to edges of the rim(axial centered, rather than radially centered).
This axial center, due to the structural profile of the rim, will have a smaller radius of gyration for the single weight, than for edge weights. Therefore, a larger weight will be needed in the axial center, or a smaller weight can be split axially (and proportionately) and used at the larger radius of outer extremes.
A dynamic balancer is not going to have the internal profile of every wheel (although they should) The dynamic balancer is deigned to put the weights at the outside extremes (split proportionately) . . .and most cars have steel wheels with the clip-on edge weights anyway.

Again: For any unbalanced wheel-tire there is one place where one counter weight will balance the wheel.
So if you want no weights on the outside lip, you don’t need to sacrifice function.

[sammyg2]

It all depends on if the wheel/tire is balanced in a single plane or two plane balance set up. Obviously the two plane is more accurate but not always necessary. In otherwords, imagine a wheel as a skinny disc, say .002" thick and 25" in diameter. If it is out of balance, the proper weight placed in the correct index will correct the weight. now imagine two discs, same size, but 8" apart from each other. This in reality is more like what a tire resembles. One can have an unbalance in a different index than the other. If they are close to being opposite of each other and equal in magnetude, a single plane balance will not be able to correct this condition. BTW it is called a couple unbalance.
In that case, a two plane (sometimes called dynamic) balance set-up will correct it but it will require weights on both planes, IE inside and out.
The effects of a measurable couple unbalance are shaking and shimmying at high speeds, but usually only at a certain frequency, when the natural harmonics or rebound of the tire are nearly equal to a multiple of the rotational speed. it can also wear tires and put undo stress on bearings. It is characterized as an axial deflection rather than a radial wobble, but can and will often be a combination of the two.

If you don't have a couple unbalance problem, you don't need a two plane balance.

[island911]

I stand corrected. However, the unbalance couple that can't be balanced with one weight is a bit rare. The couple needs to have eccentricity near 180° out of phase. If for instance it is 90° out of phase placing the weight axially centered & opposite, will give you the balance.
Anyway good point, Sammy! . . .I knew I shouldn't have said that all encompassiing word "any."

If a tire needs 2 weights to balance it, I don't want that tire. It's likely to have structural problems as well.

[john walker's workshop]

don't forget that the balance of the wheel itself is part of the equation.

[lukeh]

I had the same question several months ago. I bought new wheels from Wheel Enhancement. I asked them to put the weights on the inside as I agree it looks BAD on the outside. They said no problem. I have had no problems since I put them on the car. So it can be done without any issues.