What is GTD in IMSA?
Curious how ProAm teams compete within IMSA? Let Michelin explain the highlights and excitement that comes with the Grand Touring Daytona (GTD) class. The race version of the cars we all inspire to own with entries from Audi, Lamborghini, Porsche, and AMG; GTD cars require silver and bronze drivers and are easily identified by their green mirrors and number plate backgrounds.