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Tire balancing

  • Thread starter Thread starter Guest
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Guest

Guest
I'm balancing-challenged :?

I can get tires on and off the wheel without too much trouble but balancing always leaves me confused. Seems simple enough - suspend the wheel on a pair of jackstands, find the heavy spot, add appropriate weight opposite. What could be simpler?

But invariably I end up with a new heavy spot somewhere else. So now do I add weight to the new light spot and repeat, ending with weights all over the wheel? And why would it keep shifting around like that?

I'd take the wheels to my friendly local dealer for balancing but my local dealers aren't so friendly when it comes to jobs like this. So balance I must.

What am I doing wrong?

Debby
 
I have 8 or 10 weights so I have every increment of 1/4 oz. between 1.4 oz and 2 1/2 ounces. I mark the light spot on the tire after three or four times of letting it stop with the light spot on top. I mark the average of the spots as the light spot, (usually it it within a fraction of an inch the same) The I rotate the tire so the heavy spot (marked also) is at 9 oclock. I tape the first guess weight on the rim at the 3 oclock position. If the rim rises or falls, I add or decrease the estimate weight. Once the tire no longer rotates whel I let it go, I place it in the opposite direction, heavy side at 3 oclock and weights at 9 oclock. If it doesnt move there either, I spin it and wait to see where it stops. If in three or four spins, it never stops in the same place, I call it good. Its also good when I can rotate the tire to any position, stop it and release it, and it does not move.

On rare occasion, it may be necessary to balance to two axis, 3-9 oclock and then 12-6 oclock. I repeat the 3-9 process for the 12,6 axis. Balance on one axis at a time.

Earl
 
since i had to put on a new tire, i took it to the dealership, and they balanced it. I didnt have the stuff myself, and wanted it 100 percent right.
 
earlfor said:
I have 8 or 10 weights so I have every increment of 1/4 oz. between 1.4 oz and 2 1/2 ounces. I mark the light spot on the tire after three or four times of letting it stop with the light spot on top. I mark the average of the spots as the light spot, (usually it it within a fraction of an inch the same) The I rotate the tire so the heavy spot (marked also) is at 9 oclock. I tape the first guess weight on the rim at the 3 oclock position. If the rim rises or falls, I add or decrease the estimate weight. Once the tire no longer rotates whel I let it go, I place it in the opposite direction, heavy side at 3 oclock and weights at 9 oclock. If it doesnt move there either, I spin it and wait to see where it stops. If in three or four spins, it never stops in the same place, I call it good. Its also good when I can rotate the tire to any position, stop it and release it, and it does not move.

On rare occasion, it may be necessary to balance to two axis, 3-9 oclock and then 12-6 oclock. I repeat the 3-9 process for the 12,6 axis. Balance on one axis at a time.

Earl
Click to expand...

Earl,

That sounds like a great system. I've balanced quite a few wheels/tires and have gotten pretty good at getting close to the correct weight but your method will make it a lot easier. Nice work!

Joe
 
remember to look at the tire closely, good tires will have a colored dot on the sidewall to mark where you need to align the tire to the valve stem, this reduces the amount or eliminates the need for wheel weights.
 
focus frenzy said:
remember to look at the tire closely, good tires will have a colored dot on the sidewall to mark where you need to align the tire to the valve stem, this reduces the amount or eliminates the need for wheel weights.
Click to expand...
I always wondered what that was for!
 
focus frenzy said:
remember to look at the tire closely, good tires will have a colored dot on the sidewall to mark where you need to align the tire to the valve stem, this reduces the amount or eliminates the need for wheel weights.
Click to expand...

Leon,

I stole this idea from another site but I think it makes good sense. Rather than ASSUME the heavy spot of the wheel is at the valve stem, why not put the wheel on the balance stand and find the true heavy spot? I've done this on probably ten wheels and while the heavy spot is usually very close to the valve stem I've found some that were as much as 45 degrees away. Since the idea is to use as little weight as possible I think it only makes sense to find the true heavy spot and put the mark on the tire (which is the light spot of the tire) at that spot. As a side note, tire manufacturing process are getting so good that the tires don't have much variation in weight and some tire makers no longer put a mark on the tire. I recently put some Avon Azaros on my FJR and there were no marks on the tire.

Thanks,
Joe
 
Poot said:
since i had to put on a new tire, i took it to the dealership, and they balanced it. I didnt have the stuff myself, and wanted it 100 percent right.
Click to expand...

Dealerships....100% correct. Surely you jest? :?

As Joe stated, take the time to find the heavy spot on the wheel...it's not always at the valve stem.
 
focus frenzy said:
remember to look at the tire closely, good tires will have a colored dot on the sidewall to mark where you need to align the tire to the valve stem, this reduces the amount or eliminates the need for wheel weights.
Click to expand...

This is important to remember. I mounted a tire with the red dot right at the valve stem and it was perfectly balanced.
 
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