Re: red line tires
 

Wow great info Colin! I was actually just driving my Deuce last night and noticed the "jack hammer" affect in my tires (wide ovals) at right over 80+ mph....man is it annoying!

Re: red line tires
 

I have a original F70-14 spare and maybe a G70 also, I will check and take some pictures.

Re: red line tires
 

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I thought that the "BB" was used on the spare wheel only?

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While not Chevrolet, here is how Olds did it, from one of our Pure Stock buddies that was there back in the day...he followed his '68 W31 (that he still owns today) down the assembly line! Anyway, here ya go:

<font color="blue">Factory balancing

All GM plants at that time used one weight to balance the wheel and tire assembly. Single plane, static balance. Hot wax was deposited in a color code to denote how much to put, and the tire was rotated and another yellow wax dot showed where to put it. You either got a 1/2 oz, 1 oz, 1 1/2 or 2 oz. Any more than that and the tire/wheel assy was rejected and replaced by another assy. Rejected ones were torn down and reassembled on another wheel/tire. Our main wheel and tire room at Oldsmobile Lansing ran at 600/hour in that time period, so that doesn't leave time to do split weighting like this tire/wheel. Some units were rebalanced with split weights in the audit area, so I guess I should never say never.

I think all the automakers used similar single plane equipment at that time (Micropoise, I believe), so my best guess is that is al old wheel/tire from a tire dealer. Toronadoes used dual plane dynamic balancing due to the huge offset in the wheel. That was done on another line.

My 68 came from the factory with Goodyear steel radials (an option on Cutlass, but not 442's) but they were defective and unsafe. Goodyear recalled all of them and gave a new set of anything you want just to get them off the road. Dave Heleila </font>

Re: red line tires
 

In the July 1968 motor trend magazine, it says some of the firestone wide oval tires were defective subject to severe cracking and splitting on the sidewall and were being recalled. That may be why my july built (07C) Camaro came with Uniroyal tiger paw red stripe tires.