Actually they make both bias ply and radials in the Cobra chrome - the standard R3 sizes are available in Radial ply.
Incorporates sportbike tire technology for nimble handling
Special construction to deal with heavy loads
Incredible stability and longevity - perfect for touring
5% larger contact patch and up to 10% more mileage over original Cobra tires
Unique 'snakeskin-effect' sidewall and aggressive tread pattern
Extra wide sizes for custom bikes
Ultra-quiet
Available in a wide range of sizes, incorporating fitments for Harley Davidson's V-Rod, Triumph's Rocket III, Honda's Goldwing and Valkyrie plus some sizes for custom bike applications
Whitewalls available in some sizes indicated by WWW
Getting a set delivered in the next few days, surprisingly cheaper here than a standard pair of Cobras.
Hope the weather in the UK picks up to get out and use them, I don't ride in sub zero weather or anything close to it, too many episodes when I was younger of ending up on my arse sat in the road wondering what happened