The Flex feature in SOLIDWORKS lets you manipulate geometry around the primary axes. This helps you shape your designs to fit their function and design intent. In the case of a tire, you need the treads to bend as they would on a car. Instead of using a revolve and a circular pattern, flexing provides a much more accurate representation of the design. Ready to take your SOLIDWORKS skills to the next level? https://hubs.la/Q03NfXZS0 #solidworks #tutorial #engineering | GoEngineer | Facebook