Balancing MARK on tires?
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From: Eastern Ontario
Balancing MARK on tires?
I've just had 4 new BFG 750x17 Silvertown wide whites installed on a set of "2-piece advanced base rims" (original equipment for my 1950 F3); and the truck now shimmies so much that I can't drive it. I've kept the factory original tires (2000 miles) installed on the factory original 2 piece rims (they probably still have the 1950 air in them). The truck drives straight and true with no shimmy with these tires/wheels installed.
My manual states: "To mount the tire on a 2-piece rim, place the inner tube and the flap in the tire so that the valve stem is at the balancing mark on the tire."
Can anyone tell me how to locate this "balancing mark"?
I notice that the only one of the 4 tires that will perform reasonably well has the valve stem almost lined up with the BFG circled emblem.
Is the balancing mark something that is on the tire when manufactured, or is it something that I have to detrmine the location of by some balancing technique?
Thanks for any advice that might be forthcoming. Keith.
My manual states: "To mount the tire on a 2-piece rim, place the inner tube and the flap in the tire so that the valve stem is at the balancing mark on the tire."
Can anyone tell me how to locate this "balancing mark"?
I notice that the only one of the 4 tires that will perform reasonably well has the valve stem almost lined up with the BFG circled emblem.
Is the balancing mark something that is on the tire when manufactured, or is it something that I have to detrmine the location of by some balancing technique?
Thanks for any advice that might be forthcoming. Keith.
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Balancing MARK on tires?
Keith, your shimmy is probably from an out-of-round condition, rather than out of balance. No wheel or tire is exactly round. The wheel low/high point (can't remember which) is marked by the valve stem hole. The tire high/low point is marked by a paint daub that is painted on the tire when it's manufactured.
When tires are mounted, the tire paint daub should always be aligned with the valve stem. On all the tire sets that I have bought, I've NEVER seen this done. I don't think most tire techs or shops even know what the paint daub is for. Or maybe they're so busy they just don't care.......?
Since your tires are still new, maybe you can examine them closely and find the paint daubs. (Most are white or yellow, and are a small spot that's sprayed on the sidewall.) Then you can break them down, align the mark with the valve stem, and rebalance. If you can't find the marks, you can take the wheel and tire to a shop, and they will shave the tread with a machine to get the assembly back "in round".
Good luck.
When tires are mounted, the tire paint daub should always be aligned with the valve stem. On all the tire sets that I have bought, I've NEVER seen this done. I don't think most tire techs or shops even know what the paint daub is for. Or maybe they're so busy they just don't care.......?
Since your tires are still new, maybe you can examine them closely and find the paint daubs. (Most are white or yellow, and are a small spot that's sprayed on the sidewall.) Then you can break them down, align the mark with the valve stem, and rebalance. If you can't find the marks, you can take the wheel and tire to a shop, and they will shave the tread with a machine to get the assembly back "in round".
Good luck.
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From: Eastern Ontario
Balancing MARK on tires?
Ranger;
Thanks for the reply. I've found definite daubs on two of the tires, and traces on the other two. Two are blue, one is purple, one is green! The guy with the blue paint needs his dauber replaced...the green and the purple daubs are nice even circles. I'll try lining up the daubs with the valve stems. Thanks for the advice. Hi, Ho, Silver.
Thanks for the reply. I've found definite daubs on two of the tires, and traces on the other two. Two are blue, one is purple, one is green! The guy with the blue paint needs his dauber replaced...the green and the purple daubs are nice even circles. I'll try lining up the daubs with the valve stems. Thanks for the advice. Hi, Ho, Silver.
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Joined: Jul 2003
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From: seattle
Balancing MARK on tires?
um. one note, be Very carefull if you decide to dismount those and spin them to line up the dot to the valve stem yourself.... those two piece wheels can be kind of dangerous. be sure to air them up in a cage. ..
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Junior User
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From: Eastern Ontario
Balancing MARK on tires?
UPDATE
I spun two of the tires on their rims to align the paint daubs with the valve stems.........no more shimmy! At the same time I aligned the "dimples" just slightly away from the valve stem (the dimples whice locate the groove for breaking apart the wheel) I'll do the other two, rotate them a bit, and put the best two on the front. Thanks for the help.
I spun two of the tires on their rims to align the paint daubs with the valve stems.........no more shimmy! At the same time I aligned the "dimples" just slightly away from the valve stem (the dimples whice locate the groove for breaking apart the wheel) I'll do the other two, rotate them a bit, and put the best two on the front. Thanks for the help.
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