Brad Keselowski and Roger Penske (Nigel Kinrade/NKP via AP) 
Roger Penske says Brad Keselowski speaks only for himself and not Team Penske with his recent criticism of Toyota during its hot streak in the Cup series.
A Ford driver, Keselowski tweeted this week, "Haven't seen NASCAR let a manufacturer get this far ahead since the 70s."
Keselowski was ripped by drivers and crew on Twitter and rival Kyle Busch warned payback could be ahead. Penske said he wasn't in the business of voicing his complaints on Twitter.
"I don't regard that the way I run my business and Brad has his own thoughts and they probably are not the feeling of the team at this point," Penske said. "Toyota has done a great job in preparation for the last part of the series, and we had good cars early on. I think we're probably a little bit behind right now, but that doesn't mean we're giving up. We've got to look at the future here, and I'm not one who talks about my plusses and minuses in the media."
Penske also said he wouldn't lobby NASCAR to make changes just because one manufacturer has a perceived competitive advantage.
"NASCAR is the sanctioning body and they have the responsibility to have a level playing field," he said. If they determine it isn't, they can look at aero, they can look at engines, and I am sure they are doing that now. But at this point, we all started with the same set of rules, and Toyota has gotten hot here at the end and we've got to acknowledge that professionally."