Those tires will not stand long on a dry track. You can take a look at the Edam Razor RTR which does come with rubber tires.....
http://www.iracing.it/x830110-edam-r...ml?language=en
http://www.iracing.it/x830100-edam-g...ad-p-3907.html
They arew only available on Serpent rims but maybe only the tire can found somewhere.