We noticed a question in the comments of the 2024 NASCAR Cup Series Replay youtube video above.
The viewer asks, “Can anyone explain why the racing here hasn’t reverted back to how it was before they repaved the track when they could run anywhere from the top to the bottom instead of this mainly single middle groove I would think it’s been long enough already maybe a new kind of pavement any ideas why?”
Here’s our answer.
The repaving of Michigan International Speedway in 2012 significantly changed the racing dynamics. Before the repave, the track had a more worn-out surface that allowed for multiple racing grooves, enabling drivers to run from the top to the bottom of the track. This created more opportunities for passing and varied racing lines.
However, after the repave, the new, smoother surface resulted in a narrower racing groove, primarily in the middle of the track. This is because fresh asphalt tends to have more grip, which initially limits the number of effective racing lines. Over time, as the surface wears down and rubber builds up, the track can develop more grooves, but this process can take several years.
Additionally, the type of pavement and the specific conditions of each race can influence how quickly a track develops multiple grooves. Michigan’s wide, sweeping turns and high speeds also contribute to the current racing style, which may not revert to the pre-repave conditions without significant changes to the track surface or layout.
Do you think they should consider another repave or perhaps a different approach to track maintenance?
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