Lets remember that the bikes we all like so much are themselves old and outdated. For serious spirited riding we have all sorts of other modern machines as wells as modern tires available.
That is an oblique opinion. There's ample folks here who ride their "old and outdated" bikes in very spirited ways. A properly maintained CB, with a skilled rider upon it, can extract all the fun out of public roadways possible. Just because they're 40 years old does not make them obsolete.
Further, many have upgraded their bikes with suspension and braking modifications (including engine performance) that will certainly test your skills on curvy roads. Brent is dead right: these tires are round and rubber, but they are not performance-oriented tires utilizing modern safety designs and compounds. If you're budget stuck, then buy the best you can afford. If you want the best tire you can buy, these should never enter into consideration. They're the
only part of your bike in contact with the road surface and should be treated as
critical safety features. Like your helmet...
