The term restyling covers a broad range of automotive upgrades. While the biggest portion of the segment is made up of accessory and appearance products for both interiors and exteriors, it can also include certain performance parts, wheels, tires and suspension systems that don’t fit neatly into another category. Since the Great Recession, the restyling market has seen steady growth, according to the “2016 SEMA Market Report,” and annual retail sales in the segment are now more than $5.22 billion.