Definitely my wheels.
Coilovers were easier since I just picked a budget and there are only so many good choices out there for each budget level.
Wheels on the other hand, gotta think about
:
1. 17 vs 18"
2. How wide? Weight and handling vs concave look
3. What offset?
4. Depending on offset, can your current suspension even fit it?
5. Is it worth it to upgrade suspension (including LCAs and etc for camber) to fit a certain wheel setup?
6. What bout tire size? Meaty, rubber band, neither?
7. The damn tire choice itself.
8. TPMS, matching lug nuts, center caps, etc.
Ended up with this, done the past weekend:
The only thing that would require more thought and technical detail (IMO) is forced induction or engine swap lol.