I Might Just Know What I'm Talking About
Join Date: Dec 2006
Location: S. CA
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Re: bias plys vs radial
Biased tires are basically rubber balloons with the same amount of cord all around...while radials have much softer sidewalls with a much more rigid bottom belt for the tread.
Fully inflate a radial and the thread will be basically flat against the ground....while the biased tire will 'balloon'...
That is one of the issues with off road tires....for example, the BFG's have 3 plys in the sidewall which improves the puncture resistance but makes for a stiffer ride because they do not flex as much.