0 designs
A 9 inch wide wheel takes a 245 to 265 tire and is the flush width on a WRX, Mustang or Camaro, and the rear width on a lot of staggered 18 and 19 inch sets. Offset decides where a 21x9 ends up. The same wheel tucks at one offset and sits flush at another, and the caliper behind it sets the floor.
83 designs on this site come in 21x9, and the same diameter comes in 7 other widths, 21x12, 21x10.5 and 21x9.5 among them. Most 21x9 designs are drilled for 5x112, 5x114.3 and 5x120. Width and offset together set where the tire sits. A 21x9 at a high offset tucks, the same wheel at a low offset sits flush or pokes, so pick your car and the page keeps only the 21x9 sets that clear, with the aggressive stance option if flush is the goal.