Sonsio Grand Prix At Road America – Tony and Steve’s big Friday notebook

By Tony DiZinno and Steve Wittich Firestone Firehawks Due to the high speeds and 211 feet of elevation change on the 4.014-mile, 14-turn natural terrain road course, Firestone engineers have modified the standard NTT INDYCAR SERIES road course tires to have less tread gauge to assist with the increased temperature created by the load changes…

This content is for 12-Month TSO Subscription members only.
Log In Register