Join Date: Nov 2005
Location: Sinking Spring, PA
Re: Correct tires for a 69 ss big block
I think the radial tire came out in 1970 or around that time but definitely was not offered by GM for 1969 Camaros. I did not make my point very clear, I run with the bias ply for the judged shows and the radials for when the tire type does not matter. Sorry for any confusion.
I found the following on the web:
Michelin first introduced steel-belted radial tires in Europe in 1948. Radial tires are so named because the ply cords radiate at a 90 degree angle from the bead cord, and the casing is strengthened by a belt of steel fabric that runs around the circumference of the tire. In radial tire design the ply cords are made of nylon, rayon, or polyester.
In 1966, Michelin struck a deal with Sears to manufacture radial tires for sale under the Allstate label and within four years Sears was selling one million units per year. In the mid-1960s, B.F. Goodrich embraced radial technology as a means to win market share from its larger rivals, and the company introduced the first American-made radial in the mid-1960s and supported the launch with the Radial Age advertising campaign in 1968.
The August 1968 Consumer Reports awarded its top two spots to radials and documented the new technology's longer life, increased safety, handling and economy relative to even top-of-the-line bias-ply tires.
The advantages of radial tires include longer tread life, better steering characteristics, and less rolling resistance, which increases gas mileage. On the other hand, radials have a harder riding quality, and technologically are more complex than bias-ply tires, so they cost more to produce.
'69 SS396, X22, 50/50, 729
Last edited by 3rail; Oct 9th, 07 at 07:24 AM.