I have a 17 SI Coupe and purchased a spare wheel & tyre. following are the Honda part #s. Wheel=42700=TX4=A51 ($86.33), Tyre=42751-MAX-004 ($151.58) Adapter=74651-2SX-003 ($6.67) Hold Down Bolt= 74653-SDXl-003 ($4.88) Those are all list prices, I am sure you can do better. It fits down in the well but sticks up a bit higher so the trunk cover does not fit all the way down, no big thing for me. Worth it to have a spare.
Thanks a lot for this information I really appreciate it! Yeah i definitely agree!