Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Hi-Risers are a type of highly customized automobile, typically an inexpensive American-built sedan modified by significantly increasing the ground clearance and adding large-diameter wheels with low-profile tires. Depending on the model and build year, autos customized in this manner can be labeled "donk," "box," or "bubble." Hi-risers originally grew out of the Dirty South subculture, but the trend has spread across the United States. Vehicles customized in the hi-riser style are distinguished by their oversized rims, ranging from 22 inches to 30 inches or more in diameter, as well as fanciful custom paint-jobs and expensive audio equipment.