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Radial tyres are very much the case of "the light that burns twice as bright, lasts half as long."

You have to work radial tyres to get them up to working temperatures and they " Go off " after fewer heat cycles.

You will go faster on Radials that Cross-plies but..... and here is the big thing, you have to be more aggressive on set up.

I hate giving out suggestions on set up because as no-one knows how you drive you car, what chassis stiffness you have and damper settings; Your spring rates, the weather and track surface is and anything I have forgotten to mention!

I would just advise you that EVERY radial tired car I have see over the last 25 years has had a little MORE static camber than a car with cross-ply tyres.

They also have more caster and toe to work the surface to get it to work harder. All the Radials I have ever worked with have had stiffer sidewalls and needed stiffer springs to really get the best out of them. Correpondingly they work better on carbon chassised cars as the need a really stiff platform to get the best out of them.

Just as a final point, Radials from AVON are heavier for the same sizes. There is simply more material in the tyre.

My only advice would be go testing ( LOTS.) Good luck.

Greg.

P.S. We now run Yokohama stiff side wall Cross-plies. They are infinately faster than stock cross-plies but last as long and don't have as narrow a window of operation as the Radials we have tried.