Sports

Penske warns NASCAR team to stay out of controversy over alleged tire manipulation

  • Team owner Roger Penske watches practice for the IndyCar Firestone Grand Prix of St. Petersburg auto race Friday, March 27, 2015, in St. Petersburg, Fla. The race takes place on Sunday. (AP Photo/Chris O'Meara)

    Team owner Roger Penske watches practice for the IndyCar Firestone Grand Prix of St. Petersburg auto race Friday, March 27, 2015, in St. Petersburg, Fla. The race takes place on Sunday. (AP Photo/Chris O'Meara)  (The Associated Press)

  • Team owners Roger Penske, left, and Bobby Rahal, shake hands as they walk to pit road before practice for the IndyCar Firestone Grand Prix of St. Petersburg auto race Friday, March 27, 2015, in St. Petersburg, Fla. The race takes place on Sunday. (AP Photo/Chris O'Meara)

    Team owners Roger Penske, left, and Bobby Rahal, shake hands as they walk to pit road before practice for the IndyCar Firestone Grand Prix of St. Petersburg auto race Friday, March 27, 2015, in St. Petersburg, Fla. The race takes place on Sunday. (AP Photo/Chris O'Meara)  (The Associated Press)

Roger Penske has warned his NASCAR team to stay out of any controversy regarding the possible manipulation of tires used during races.

The team owner is aware of rampant industry speculation that some crews are drilling tiny holes in tires to allow air to escape during a race.

NASCAR has confiscated tires the last two weeks for further inspection. The tires from Kevin Harvick and Team Penske driver Joey Logano were taken after the race in Phoenix, but NASCAR said both teams were clean.

Four drivers had their tires taken after California last week and the results haven't been made available.

Penske believes any team caught manipulating tires should face a potential ban from NASCAR.