Today we’re talking Porsche 986 and 987 Boxster/Cayman.
Long overshadowed by the 911, these cars have gained serious traction lately—and for good reason. Mid-engine balance, solid performance, and relatively affordable entry into Porsche ownership.
The 986 kicked things off in the late ‘90s, and the 987 refined it with better styling, interior, and performance—plus the introduction of the Cayman.
You’ve got multiple drivetrain options, and like any good platform, mods come quick—starting with wheels and tires.
So let’s get into it
Both platforms run a 5x130 bolt pattern and 71.6mm center bore. Factory setups are typically staggered, ranging from 16s up to 19s depending on the model, with offsets usually around ET50 front and ET40 rear.
A. No Hassle – KEEP STOCK TIRE
Aggressometer: 0–10%
Definition: Plug-and-play fitment with no suspension changes needed.
Suggested Fitments:
Front: 8 ET55–50
Rear: 9 ET55–50
Clean upgrade, keeps the stagger, no extra work required.
Recommended Wheels:
F1M 19x9 ET50
F5R 19x9 ET50
B. Slight Flex
Aggressometer: 50%
Definition: Wider stance with more grip. Minor suspension tweaks may be needed depending on tire.
Suggested Fitments:
Front: 8.5 ET50–45
Rear: 9–9.5 ET48–45
More presence without going overboard.
Shown F1M in 18x9" ET46
Recommended Wheels:
F1M 18x9 ET46
F3S 18x9 ET46
F3S 19x9 ET48
F5R 19x9 ET50
MRK1XR 21x9.5 ET46
C. All The Wheel
Aggressometer: Full
Definition: Aggressive setup requiring suspension mods, alignment, and possibly minor fender work.
Suggested Fitments:
Front: 9 ET46 (Square option)
Rear: 10 ET36 (986) / 10.5 ET44 (987)
For those chasing stance and performance.
Shown F1M in 18x9" ET46 Front and 18x10.5" ET44
Recommended Wheels:
F1M 18x9 ET46
F3S 18x9 ET46
F1M 18x10.5 ET44
F3S 18x10.5 ET44
D. You’re on Your Own
Aggressometer: Extreme
Disclaimer: Expect rolled fenders, added camber, and possible body work.
Suggested Fitments:
Front: 9.5 ET40–35
Rear: 10.5 ET40–35
Full send territory—plan accordingly.
Recommended Wheels:
F1M 18x10.5 ET44
F3S 18x10.5 ET44
Quick Reference Fitment Chart
| Category | Width | Offset Range |
|---|---|---|
| No Hassle | 8–9” | ET50–55 |
| Slight Flex | 8–9.5" | ET48-50 |
| All The Wheel | 9”–10.5" | ET36-46 |
| YOYO | 9.5–10.5" | ET35-40 |