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SONOMA, Calif. -- Tony Stewart was running lap times about a second faster than expected at Indianapolis Motor Speedway when a blown tire caused him to wreck during this week's Goodyear test.
Goodyear officials said Stewart's accident on Tuesday 17 laps into a 20-lap run was the only incident of the two-day test. The three-time NASCAR champion was not injured.
Goodyear's Director of Racing Greg Stucker said in a statement Friday that Stewart's increased, sustained speed generated a significant amount of heat and caused his right front tire to blow.
Joey Logano said Friday changes were made after Stewart's accident to "cut some speed out of the cars." Logano said Stewart had the fastest car of the six drivers at the test.