Were the spare tires balanced like the rest of the tires or were they left unbalanced without wheel weights? Don't know why the wouldn't be as they would have to have kept them separate on the line but overheard at the regional that they were not.
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65 350 TI CONV 67 J56 435 CONV,67,390/AIR CONV,70 454/air CONV,
What A MAN WON'T SPEND TO GIVE HIS ASS A RIDE -
Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
Yes they were, with the weight on the inside of the rim like the rest of the wheels. -
Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
Don't believe everything you hear at a regional. They certainly were, and as Ralph said, just like all the others, with the weight on the inside.Comment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
As stated spare tires were statically balanaced with weight on the inside only during the C1/2 era. Sometime in the early C3 era tires were specifically "match mounted" to align the high spot of the tire with the low spot of the wheel (it might be vice versa), which gave the least out of round of the wheel/tire assembly, and then statlically balanced. I think Terry M. has discussed this in the past.
At some point dynamic balancing was instituted, which usually requires weights on each side of the tire, but it may not have been done until the C4 era.
DukeComment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
My question; So if the spare doesn't have any weights, is there a deduction? I ran across a spare that appeared "New" yet looked like the original spare. Owner said it was the original. It had no weights. Any deduction?Comment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
I can attest to the're being balanced. The spare tire/wheel in my tub has never been on the ground. It has balance weights on the inside of the rim. Ever seen a new U.S. Royal 670x15 black wall tire? We went over 130 mph on these things in Nevada late 1963 on our way from White Sands, NM to Las Vegas. Crazy, but that was the sign of the times.
Stu FoxComment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
I'm not a judge but I wouldn't understand a deduct if there was no weight. Occasionally these wheel/tire combos balanced out OK without any weights at all. If the wheel is an original wheel and there are no "scars" where there may have been a weight originally, I would say all's good.Leif
'67 Coupe L79, M21, C60, N14, N40, J50, A31, U69, A01, QB1
Top Flight 2017 Lone Star RegionalComment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
THANKS GUYS! That's what I thought. The conversation was about C-3"S. It only seems logical that all tires were balanced but maybe they were talking about outside weights or the static balanced ones.65 350 TI CONV 67 J56 435 CONV,67,390/AIR CONV,70 454/air CONV,
What A MAN WON'T SPEND TO GIVE HIS ASS A RIDEComment
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65 350 TI CONV 67 J56 435 CONV,67,390/AIR CONV,70 454/air CONV,
What A MAN WON'T SPEND TO GIVE HIS ASS A RIDEComment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
In the 50+ years I have watched at close range the balancing process of newly mounted tires for my cars I have run across one example where no balance weight was required. It was about 15 years ago on a newly mounted 205/60R13 86V Toyo Proxes RA-1 DOT legal racing tire on an OE wheel from my Cosworth Vega.
I asked the tech if he has ever seen that before. He said once or twice. Just to be sure he spun it again on the dynamic balancer, and the result was, again, zero/zero.
It's possible it balanced perfect with no weight needed at St. Louis or was not balanced. They did make mistakes and still do, which his why so many vehicles are recalled nowadays.
Sets of five matching brand/model/size/features, mounted/balanced wheels/tire assemblies were delivered to the wheel mouning assembly line station. The assembler simply selected the proper code for the tire option on the build sheet and installed them. None of the five were specific to any location on the car.
If I were the judge I would inspect the inside of the wheel flange for any evidence that a weight was ever installed, because those old clamped on weights always leave a gouge in the paint. If no evidence that a weight was ever there, how could a judge take a deduction? The benefit of the doubt always goes to the owner.
DukeComment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
Duke, correct, it goes to the owner. Saying that I do expect to see one or two wheels with a weights when I'm judging exterior. When I see no weights I take a deduction but it's only a point or two.
I would think an owner is not going to drive the car on old or new bias-ply tires. Just take any small period correct weight and put it on the spare anywhere on the inside rim as it just doesn't matter for Flight Judging.
PV is a different set of rules as you must go for a drive with the team leader. If the car has a shimmy your going to fail.
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
Harry, I have 7 Corvettes C1-C2 and they all have new bias ply tires.
They are balanced with Micro weights and they are driven regularly.
Why would an owner not drive on these tires? What are the tires for?Comment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
I guess that an owner could always bring a spare tire balancing machine to judging events to prove that the spare tire didnt need a weight.Comment
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Re: SPARE TIRE in C2/C3'S BALANCED OR NOT
Ken, the original wheels with original tires mounted for my '77 and '78 are in the garage. All 10 are balanced. SteveComment
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