The term RIM ATTACHMENT can be broken down into two crossword solutions: NET (3 letters) and TIRE (4 letters). A rim attachment is a device that is used to attach a TIRE to the wheel of a vehicle. The most common type of rim attachment is a NET, which is a flexible material that is wrapped around the TIRE and secured to the wheel. The other type of rim attachment is a TIRE, which is a solid rubber ring that is placed around the TIRE and secured to the wheel. Both types of rim attachments are necessary for a safe and secure connection between the TIRE and the wheel.