Wheel Weight excess
#1
Racer
Thread Starter
Wheel Weight excess
Is it normal to have this many weights on the front tires? The rear tires seem to be what I'd consider normal but the fronts seem excessive. Thoughts? I seen a few post on here about road force balancing of the front tires due to unbalanced rotors. If it helps, this is a 2010 ZR1.
Front Driver side has 10
Front Passenger side has 12
Rear Driver side has 3
Rear Passenger side has 2
10 weights - Driver Front
3 weights - Driver Rear
12 weights - Passenger Front
2 weights - Passenger rear
Front Driver side has 10
Front Passenger side has 12
Rear Driver side has 3
Rear Passenger side has 2
10 weights - Driver Front
3 weights - Driver Rear
12 weights - Passenger Front
2 weights - Passenger rear
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LowRyter (05-16-2019)
#3
Race Car Tech
Depending upon the tire installer and the balance machine, and time restraints, they will attempt to balance with the least amount of weight as possible. That is accomplished by mountimng the tire, getting the balance data, and shifting the tire position until the amount of balance weight is minimal.
2 of your tires are extremely good, while the other 2 are very reasonable The rule of thumb is the balance weights should be max 1% or less of the total weight of the tire/rim.
If a tire/rim weights 65 lbs, then 1% would be 6.5 oz of balance weights.
Assuming that each one of your blance weights is 1/4oz, then 12 would be 3oz, which is more than acceptable
2 of your tires are extremely good, while the other 2 are very reasonable The rule of thumb is the balance weights should be max 1% or less of the total weight of the tire/rim.
If a tire/rim weights 65 lbs, then 1% would be 6.5 oz of balance weights.
Assuming that each one of your blance weights is 1/4oz, then 12 would be 3oz, which is more than acceptable
Last edited by 4SUMERZ; 05-15-2019 at 10:49 AM.
#4
Racer
Thread Starter
Depending upon the tire installer and the balance machine, and time restraints, they will attempt to balance with the least amount of weight as possible. That is accomplished by mountimng the tire, getting the balance data, and shifting the tire position until the amount of balance weight is minimal.
2 of your tires are extremely good, while the other 2 are very reasonable The rule of thumb is the balance weights should be max 1% or less of the total weight of the tire/rim.
If a tire/rim weights 65 lbs, then 1% would be 6.5 oz of balance weights.
Assuming that each one of your blance weights is 1/4oz, then 12 would be 3oz, which is more than acceptable
2 of your tires are extremely good, while the other 2 are very reasonable The rule of thumb is the balance weights should be max 1% or less of the total weight of the tire/rim.
If a tire/rim weights 65 lbs, then 1% would be 6.5 oz of balance weights.
Assuming that each one of your blance weights is 1/4oz, then 12 would be 3oz, which is more than acceptable
#5
Melting Slicks
Some brands of tires are better than others. My car came with Coopers and had quite a bit of weights, I just put on Michelins and no wheel has more than 3.
#6
Drifting
Back in the day, before lead became the devil, the weights themselves would have been smaller and less noticeable. The steel (fe) weights are larger for their weight.
I balance my own motorcycle tires and bought several pounds of stick-on lead weights before they became an issue...
I balance my own motorcycle tires and bought several pounds of stick-on lead weights before they became an issue...
#7
Race Director
Seems pretty excessive to me. I have mine road force balanced and they will rotate the tire on the rim until the location requires the absolute least amount of weight. In some cases they will try a different tire to try to get the balance as close to zero as they can. None of my vehicles have anywhere close to this many weights.
#8
Race Director
Seems pretty excessive to me. I have mine road force balanced and they will rotate the tire on the rim until the location requires the absolute least amount of weight. In some cases they will try a different tire to try to get the balance as close to zero as they can. None of my vehicles have anywhere close to this many weights.
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mikeCsix (05-17-2019)
#11
Seems pretty excessive to me. I have mine road force balanced and they will rotate the tire on the rim until the location requires the absolute least amount of weight. In some cases they will try a different tire to try to get the balance as close to zero as they can. None of my vehicles have anywhere close to this many weights.
#13
Safety Car
Member Since: Aug 2006
Location: Port St. Lucie West Florida
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On my old C4, I had chrome ZR1 wheels (repro) I ordered it on line and they ran a special with the tire that I wanted. They checked the last tire and said the rim was out of spec and were waiting for the new rims to arrive so that they all could be balanced correctly.
#14
Team Owner
It's not trial and error. Unfortunately, if you drive the car hard, you can rotate the tires on the rims and now you've got an out of balance condition again. The best policy is to just have things right to begin with.
If the op jacks the car up, sets up his phone to video the wheel rotating from the inside (under the car), then spins the front wheels, he'll see the inside of the rim is bent and running out. It'll coincide with the wheel weights, but just watch the edge of the barrel as it spins and you'll see it. It's easily fixable, I did my own.
#15
Racer
Thread Starter
A few pics of the front driver's side tire.
Original run flats that came with the car.
Tires date shows 19th week of 2009. You can still see the Michelin guy on the tires tread.
Front Driver side tire. 285/30/19
Last edited by c05v3tt3; 05-16-2019 at 09:34 AM.
#16
Racer
Thread Starter
Seems pretty excessive to me. I have mine road force balanced and they will rotate the tire on the rim until the location requires the absolute least amount of weight. In some cases they will try a different tire to try to get the balance as close to zero as they can. None of my vehicles have anywhere close to this many weights.
#18
Drifting
Are the wheels OEM or aftermarket?
#19
Racer
Thread Starter
Balance machines check the inside of the wheel with a laser in order to determine an out of round condition. They check the tire for an out of round condition using an external roller. Then the machine tells you how to relocate the tire on the rim to have them compliment each other. Only works if the wheel is out of round though.
It's not trial and error. Unfortunately, if you drive the car hard, you can rotate the tires on the rims and now you've got an out of balance condition again. The best policy is to just have things right to begin with.
If the op jacks the car up, sets up his phone to video the wheel rotating from the inside (under the car), then spins the front wheels, he'll see the inside of the rim is bent and running out. It'll coincide with the wheel weights, but just watch the edge of the barrel as it spins and you'll see it. It's easily fixable, I did my own.
It's not trial and error. Unfortunately, if you drive the car hard, you can rotate the tires on the rims and now you've got an out of balance condition again. The best policy is to just have things right to begin with.
If the op jacks the car up, sets up his phone to video the wheel rotating from the inside (under the car), then spins the front wheels, he'll see the inside of the rim is bent and running out. It'll coincide with the wheel weights, but just watch the edge of the barrel as it spins and you'll see it. It's easily fixable, I did my own.