The crossword solutions for the term SITE SPARE TIRE are WAIST, which is a five-letter word. The term 'WAIST' is used to refer to the part of the body between the ribs and hips, and is commonly used to describe the circumference of clothing worn around the WAIST. The term 'spare tire' is often used to refer to an extra tire that is kept in a vehicle in case of a flat tire. This phrase is also used to describe someone's midsection when they have gained excess weight. Therefore, the term SITE SPARE TIRE can be interpreted as referring to the circumference of the WAIST, or the extra weight around the midsection.