18×8 ET40 Wheels on a 2017 Honda Civic

3 documented builds specifically using ET40

Show evidence for this exact wheel size and offset on my vehicle/year. Exact size+offset builds are observational evidence only — not a universal fit, not the “correct” offset, and not a no-rub guarantee.

Evidence summary

Documented builds using 18×8: 31
Documented builds specifically using 18×8 ET40: 3
Axle context: 2 square · 1 staggered · 3 front-only · 0 rear-only · 0 both axles

3 documented 2017 Honda Civic builds in our database use 18×8 ET40 wheels. This is observed use — not a fit confirmation.

Compared with OEM

Aftermarket: 18×8 ET40

Compared with the OEM 18×8 ET50 configuration.

Width: same width

Outer edge 10 mm farther toward fender (more outward poke)

Inner edge 10 mm farther from suspension (more inner clearance)

Geometry is deterministic vs the named OEM baseline. It does not mean the setup fits or will clear.

Tires documented with 18×8 ET40

225/40R18 — 1 build
235/35R18 — 1 build

225/40R18: -1.2% overall diameter vs selected OEM tire — descriptive only, not a clearance rating.
235/35R18: -3.6% overall diameter vs selected OEM tire — descriptive only, not a clearance rating.

Documented tire pairings are not tire recommendations.