balancing issue

[racsan]

my new set of tires/wheels seem to have a slight balance issue, theres a vibration aboput 25-40 mph, not as bad at 55-65 but still there. i noticed when i went to put them on they only have weights on the inside of the tire, and one of them has alot of weight, like 5 oz. idk why they didnt do a normal "full-balance", didnt think id have to specify that. im considering taking them off and having them rebalanced. (the RIGHT way, in my opinion) anyone have tires balanced with just weight to the inside with no issues? i dont really care about the weight being visable, they are black D-windows and i can just use a black paint pen over the lead weight.

 

[Sasquatch_Ryda]

Maybe they didn't want to pound weights onto the outside lip of your new wheels and just did a static balance?

 

[racsan]

https://mail.google.com/mail/u/0/?u...tt&th=144b2ba8958edef7&attid=0.0&disp=safe&zw
heres a link to the picture of the tire with all the excessive weights on it, i did put a bead of silicone on due to it looking like the weights could come off. not sure if its because the rim material is thicker than normal or if it was just a poor job done by the "tire guy". is it maybe possible my added silicone could have affected things enough to cause a out of balance condition? i might cut away the rtv with a razor knife and see if that helps....

 

[brokemechanic3000]

A shake at that speed range usually indicates a bad tire and not a balance issue. Sounds like the guy put it on the machine and added the weights without watching for a separation or a out of round condition.

 

[ab_slack]

couldn't view the pic it wanted a google login.

Just an in-expert opinion, while the silicon doesn't weigh much if there was enough I might suspect. Easy enough test I suppose to remove the silicone and see if it makes a difference.

 

[racsan]

sory about the picture...it was really cold today here and i didnt have a chance to do anything, 24 and gusty winds all day long...and no garage. that'll be my first thing i try. (removing what silicone i can)

 

[adsm08]

I'm with Broke here, an out of balance tire won't show up that fast. Out of balance comes in faster than 25.

 

[4x4junkie]

He said "about 25-40 mph" (while misspelling "about")

Regardless of a bad tire or not, putting all the weights on the inside lip of the rim is NOT the right way to balance tires.

Take it back, have them rebalanced correctly (dynamic balance). If there's still an issue, then I'd say start looking for a bad or out-of-round tire.

 

[brokemechanic3000]

Static balancing is an acceptable way of balancing tires (lots of cars and trucks have no outer lip to put weights on) but in this case dynamic balance would have been a better idea. But I stand by my statement that it is likely out of round or separated. I could balance a football but it still wouldn't be round.
Or could it be a suspension or steering part gone bad

 

[racsan]

i plan on getting them balanced the "right" way, had a rear axle brake line go monday on my way to work, ended up replacing everything from the flex hose to the wheel cylinders. the other set of tires i was running gave me no issues, so its something with this set, nothing in the way of steering or suspention had changed when i put on this set.

 

[adsm08]

Static balancing is an acceptable way of balancing tires (lots of cars and trucks have no outer lip to put weights on)

Um, sticky-weights. Static balance is never acceptable anymore.

Honestly, it may be a roadforce issue. That can come in that soon, although it is more common for roadforce to come in around 45.

 

[4x4junkie]

Static balancing is an acceptable way of balancing tires (lots of cars and trucks have no outer lip to put weights on) but in this case dynamic balance would have been a better idea. But I stand by my statement that it is likely out of round or separated. I could balance a football but it still wouldn't be round.
Or could it be a suspension or steering part gone bad

Putting all the weights on just the inside edge of the wheel is what's not acceptable (just throws the tire's dynamic balance completely to hell, enough to cause severe steering shimmy or even death-wobble). If doing static balancing, the weights should go in the CENTER of the rim to have the least impact on dynamic balance (which does require stick-on weights).

 

[brokemechanic3000]

To Adam and 4x4
Static balancing is an acceptable way of balancing for most vehicles there are places where it shouldn't be done and as I have said this was one of those. As far as the static balance throwing off the dynamic balance, those are two different ways of measuring the balance it still does the same thing. Dynamic balancing uses an inner and outer plane to get the total static balance as close to zero as possible. Plus it is real hard to use the inner plane to put a stick on weight on the center of the wheel (a couple of inches from where the measuring is taken) and still clear the brakes when it is put back on the vehicle.

I just realized that no one here has suggested rotating the tires and see if the problem goes away or if the shake changes.

I have used the balancing powder/liquid/static/dynamic/center patch/clip on/stick on/you name it I have done it. They all work and can be used in most applications but some are better than others depending on conditions. H*ll I have even used the old bubble balancer, which by the way static balances the outer plane only. We balanced tires before the modern balancing machine was around to tell us how much weight to use and where to put it.

 

[racsan]

ive thought about the "pellets in the tire" balancing.
http://www.innovativebalancing.com/gallery1.htm
if that would work, it would be great. rotating the tires around i never thought about, i put the tire with the most weights on the right rear, the tires with the least amount of weights are up front.

 

[4x4junkie]

To Adam and 4x4
Static balancing is an acceptable way of balancing for most vehicles there are places where it shouldn't be done and as I have said this was one of those. As far as the static balance throwing off the dynamic balance, those are two different ways of measuring the balance it still does the same thing. Dynamic balancing uses an inner and outer plane to get the total static balance as close to zero as possible. Plus it is real hard to use the inner plane to put a stick on weight on the center of the wheel (a couple of inches from where the measuring is taken) and still clear the brakes when it is put back on the vehicle.

Read one more time, I said putting all of the weights on just the inside lip is not acceptable. I never said static balancing itself can't be acceptable (though it still can be hit-or-miss, depending on the variances within each tire). Whether the weights hit the calipers depends on how much clearance there is and the thickness of the weights. So far I've not run into this issue myself yet.

In this day & age I wouldn't think there are many tire places that do not have a dynamic-capable tire balance machine (hell, I even built one myself... not exactly rocket science). To just do it statically and putting all the weights like that is nonsense.