CHARLOTTE, N.C. (AP) -- NASCAR apologized Tuesday for the tire fiasco that ruined its prestigious race at Indianapolis Motor Speedway and vowed to avoid a repeat.
A durability issue with the tires Goodyear brought to Indy forced NASCAR to call cautions every 10 to 12 laps on Sunday to slow the action and force teams to change their tires before they failed. The longest run under the green flag was 13 laps, and Jimmie Johnson claimed the victory at the end of a seven-lap sprint to the finish in the second-slowest race in the 15 years NASCAR has competed at the Brickyard.
The drivers were disgusted, fans were frustrated and NASCAR is still trying to figure out why things went so wrong.
"I can't say enough how sorry we are and it's our responsibility being NASCAR that we don't go through this situation again," said Robin Pemberton, vice president of competition.
"The race didn't come off like we had hoped, the fans didn't get what they exactly wanted and we'll do everything in our power -- it won't happen again, I can tell you that much."
NASCAR must first figure out why Goodyear's tires struggled so mightily at Indianapolis. The only thing that is certain is that the tire compound Goodyear selected was not strong enough when combined with NASCAR's current car.
The new car is a heavier model that puts significantly more stress on right-side tires, and Goodyear's inventory last weekend couldn't hold up to the pressure.
"It's obvious that we didn't go there with the right car-slash-tire combination," Pemberton conceded.
The problem was exposed in a Saturday afternoon practice session, when some cars couldn't make it three laps without the tire wearing down to the cords. A second practice session was only slightly better, when the runs stretched to about 10 laps before tires began to falter.
Goodyear shipped in an emergency batch of 800 tires it had earmarked for this weekend's race at Pocono, and NASCAR pulled all the crew chiefs together hours before Sunday's start to discuss a strategy for staging a safe race.
Officials decided to throw a "competition caution" 10 laps into the race to examine the tire wear, and promised to continuously monitor throughout the race. With Pemberton patrolling pit road, it became clear the tires wouldn't last much past the 10-lap window unless the abrasive Indy surface began to pick up rubber that would help the tires' traction and extend their wear.
It never happened, as the surface became the equivalent of a cheese grater and the rubber turned into a black dust that made the track even slicker -- forcing NASCAR to take control of the race.
"We have to run the race and we have to run the safest race possible, and when we're in situations where we have to take control under adverse circumstances, that's what we do," Pemberton said. "To get ahead of it and have the safest race possible, we had to take control and that's what we did -- run 10 to 11 laps at a time and let the cautions fly."
Goodyear plans to return to Indianapolis later this year to conduct another tire test. The first was held in April when Kurt Busch, Dale Earnhardt Jr. and Brian Vickers participated in a controlled test session for the manufacturer.
NASCAR did not have an open test at Indy this year -- something it has done in previous years -- because the crew chiefs did not select it when polled late last season on where they wanted to test.
NASCAR is currently working on a new testing policy that would give teams more testing dates and freedom to choose the tracks.
NASCAR officials spoke Tuesday morning with both Goodyear officials and Indianapolis president Joie Chitwood, as all parties tried to move forward. Track chairman Tony George was adamant in an interview with The Indianapolis Star that the surface was not a factor in Sunday's debacle.
"The problem is solely (NASCAR's), and by that I mean it's theirs to figure out," George told The Star. "It's not going to come with anything we do to the track. Figuring it out will only come with getting the car and tire combination right, and that requires actually spending the time and effort to do something about it.
"The track won't change next year, so if they want to come back, they better figure it out because I don't think the fans want to come back and see that."
Pemberton agreed there is nothing wrong with the track, and in admitting NASCAR is deeply affected by the fiasco, vowed the issue will be corrected before next year's return.
"It hurts us whenever we have a weekend like we had," Pemberton said. "There's nothing worse than coming away from a race and knowing the result was ... it wasn't even close. It wasn't even in the 25th percentile of what we're capable of doing and what we do week in and week out.
"When we go back to Indianapolis next year, we'll probably have the best Brickyard we've ever had."
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