Hoosier Radial vs ?

[FED 387]

When you buy tires do you buy them at the track or somewhere else ? If you buy them at the track have you ever asked the tire techs if they have a "short set" of whatever size tire you are looking for???? ---sometimes just changing the roll out a little will improve your times without loosing any of the benefits of the tire fooprint etc that you already have--- by changing to a different size tire you might be comprising tread width ,weight etc.---FED 387