[rustyfan]

Seems there is a slim chance the tires might be modified as well - the following is axed from an article at ESPN;

Al Speyer, executive motorsports director for Bridgestone/Firestone, says the IRL has asked his company to look at some things but hasn't discussed anything specific.

"You can reduce grip a number of ways," said Speyer. "Narrower tires, grooves on tires or harder compounds. We could also round out the shape of the tires, which puts less of the tread contacting the track.

"Narrow tires would pay a big price in the aero drag of the car. At Indy you'd be going a lot faster in a straight line but it would slow down the cornering speeds.

"Some of these tracks are a significant challenge to us and you have to be careful because if narrower tires start failing you haven't improved safety."