Wheel balance
Burning Brakes
Joined: May 2006
Posts: 1,049
Likes: 2
From: Houston TEXAS
I work at the Discount Tire right down the road from you at Monroe and 45. There are several factors which can contribute to an excessive amount of weight on a rim. All tires and rims have imperfections which cause some spots to be heavier than others. These imbalances are magnified with the centrifugal force of the tires speed spinning. This imbalance becomes excessive when the heavy spots in the tire and rim are in close proximity to one another. Adding an excessive amount of weight to compensate is not the best option to correct the imbalance. The problem will be more accurately (and permanantly) corrected by turning the tire on the rim so that the imbalances offset one another thereby minimizing the amount of weight necessary to compensate. An experienced technician on a Coats 9700 will be able to determine where these heavy spots are, and correct them. Some tires-Goodyears especially- are notorious for excessive imperfections, and I have warrantied several units out for this reason over the 13 years I have been with the company.
How much weight was added to your rim? What kind of tire are you running?
How much weight was added to your rim? What kind of tire are you running?
Race Director
Joined: Dec 2002
Posts: 10,233
Likes: 21
From: Baltimore suburbs Maryland
Coats makes a 9700? I thought it was Hunter with the GSP9700 thats supposed to minimize the rim and the tire's heavy/light spots by rotating the tire on the rim....
I've seen like 4 oz of weight on C5 repro wheels before. My Mag wheels needed .25 oz on one and 1.5 oz on the other.
I've seen like 4 oz of weight on C5 repro wheels before. My Mag wheels needed .25 oz on one and 1.5 oz on the other.
Instructor
Joined: Oct 2007
Posts: 188
Likes: 0
I once had a problem witha a B F Goodrich tire and the factory rep told me that they only allowed 3 oz MAX. However I purchased replica wheels from Discount Tire and after seeing them try to install 6 oz of lead I complained. After all the crap they removed the tire and spun the rim bare ( NO TIRE) and it was 3 oz off. They replaced that rim. To my dismay I'm stuck with four wheels each needing about 3 oz of weight, all on the outside of the wheel I FRICKEN HATE THEM! Thanks discount tire
Thread Starter
Safety Car
Joined: Oct 2003
Posts: 3,854
Likes: 8
From: Pearland, TX
Cruise-In VIII Veteran
St. Jude Donor '03 thru '20
I work at the Discount Tire right down the road from you at Monroe and 45. There are several factors which can contribute to an excessive amount of weight on a rim. All tires and rims have imperfections which cause some spots to be heavier than others. These imbalances are magnified with the centrifugal force of the tires speed spinning. This imbalance becomes excessive when the heavy spots in the tire and rim are in close proximity to one another. Adding an excessive amount of weight to compensate is not the best option to correct the imbalance. The problem will be more accurately (and permanantly) corrected by turning the tire on the rim so that the imbalances offset one another thereby minimizing the amount of weight necessary to compensate. An experienced technician on a Coats 9700 will be able to determine where these heavy spots are, and correct them. Some tires-Goodyears especially- are notorious for excessive imperfections, and I have warrantied several units out for this reason over the 13 years I have been with the company.
How much weight was added to your rim? What kind of tire are you running?
How much weight was added to your rim? What kind of tire are you running?
My problem was actually with Discount Tire in Pearland on some new tires I bought for my Denali. My wife took the truck in and I saw it last night. They had installed about 8" of lead around one side of the rim. I called BS on it and she took it back there today. They did rebalance and she called to say that there was very little weight needed once they spun the tires on the rim and rebalanced.
I'll send you a PM, I need a road force balance on my DD. I'll come see you.
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Instructor
Joined: May 2007
Posts: 214
Likes: 4
From: Sweden
Do you know anybody who can do a proper balancing/aligning in PA???
Some time ago a tire company (no nasme) adjusted my alignment and balanced wheels. Now it is good up to 130 mph but after that I have some seriouse issues with wibrations. I believe it is because of Z06 rims and not due to Michelin PS2s???
HELP!
Some time ago a tire company (no nasme) adjusted my alignment and balanced wheels. Now it is good up to 130 mph but after that I have some seriouse issues with wibrations. I believe it is because of Z06 rims and not due to Michelin PS2s???
HELP!
Race Director
Joined: Dec 2002
Posts: 10,233
Likes: 21
From: Baltimore suburbs Maryland
Do you know anybody who can do a proper balancing/aligning in PA???
Some time ago a tire company (no nasme) adjusted my alignment and balanced wheels. Now it is good up to 130 mph but after that I have some seriouse issues with wibrations. I believe it is because of Z06 rims and not due to Michelin PS2s???
HELP!
Some time ago a tire company (no nasme) adjusted my alignment and balanced wheels. Now it is good up to 130 mph but after that I have some seriouse issues with wibrations. I believe it is because of Z06 rims and not due to Michelin PS2s???
HELP!
Oh yeah, and if the technician doesn't know what he's doing the GSP9700 doesn't help either. Don't ask me how I know
Tire balancing are NOT created equal.
