What is the factory spec for the OEM 2008-14 STI (GR/GV) 18x8.5 +55 wheel, 5x114.3 on a Subaru WRX and STI (GE/GH/GR/GV, 2008-2014)?
Added · Updated
Short answer: Factory specification Confirmed
Verdict:Factory spec Confirmed confidence (3 of 3) · 6 sources
Factory specification: Factory 2012-14 STI wheel: 18x8½J at +55 mm inset on 5x114.3, with 245/40R18 93W tires; wheel nuts 100 N·m.
Safety-critical part. This spec is confirmed from manufacturer documentation (listed under Sources). Still check it against the factory service manual for your exact car, or have a qualified shop do or check the work.
| Part | OEM 2008-14 STI (GR/GV) 18x8.5 +55 wheel, 5x114.3 |
|---|---|
| Vehicle | Subaru WRX and STI (GE/GH/GR/GV, 2008-2014) |
| Years | 2012-2014 |
| Trim / condition | STI (WRX is 5x100) |
| Verdict | Factory spec Specification |
| Confidence | Confirmed 3 of 3 — Backed by a manufacturer document, or two or more independent sources agree on a specific checkable fact. |
| Last verified | 2026-10-26 (date the cited sources were last read) |
Details
Factory 2012-14 STI wheel: 18x8½J at +55 mm inset on 5x114.3, with 245/40R18 93W tires; wheel nuts 100 N·m. The 2008 release and 2008-09 owner's manuals give the same 18x8.5 size and 245/40R18 tire (BBS forged optional for 2008) but not the offset, so this row covers 2012-14. It does not bolt to a 2008-14 WRX, which is 5x100.
Specs
- bolt pattern: 5x114.3
- centerbore mm: 56.1
- size: 18x8½J
- offset mm: 55
- tire: 245/40R18 93W
Other wheels fitment for the GE/GH/GR/GV
- OEM 2008-10 WRX (GE/GH) 17x7 wheel, 5x100 — Unclear — details missing Unclear
- OEM 2011-14 WRX (GR/GV) 17x8 +53 wheel, 5x100 — Specification Factory spec
- OEM 2002-2004 WRX wheel (16x6.5 +53) — Unclear — details missing Unclear
- OEM 2006-2007 WRX wheel (17x7 +55) — Reported to fit Fits
- OEM 2015-19 WRX (VA) 17x8 +55 wheel, 5x114.3 — Does not fit Doesn't fit
- OEM 2015-17 STI (VA) 18x8.5 +55 wheel, 5x114.3 — Reported to fit Fits
This part on other generations
- Subaru WRX and STI (VA, 2015-2021) — Reported to fit Fits
- Subaru WRX (GD/GG, 2002-2007) — Does not fit Doesn't fit
More for this car
- All Subaru WRX and STI (GE/GH/GR/GV, 2008-2014) fitment answers · GE/GH/GR/GV common problems
- Newsletter archive: past issues with every new and corrected entry
Sources
- 2012MY Impreza WRX & STI service manual G1130BE (book 12STI_US, 2011-08-23) — Subaru (Fuji Heavy Industries) (mfr spec; read 2026-10-26; full page read)STI: 18x8½J, inset 55, PCD 114.3, 245/40R18 93W.
- 2014MY WRX & STI service manual, chassis section, G1180BE7 (book 14WRX_STI_US_EN, 2013-06-03) — Subaru (Fuji Heavy Industries) (mfr spec; read 2026-10-26; full page read)
- 2008 Impreza owner's manual A1950BE-A — Subaru (Fuji Heavy Industries) (editorial; read 2026-10-26; full page read)2008 size list includes 245/40R18 on 18x8½J.
- 2009 Impreza owner's manual A1960BE-A — Subaru (Fuji Heavy Industries) (editorial; read 2026-10-26; full page read)2009 size list includes 245/40R18 on 18x8½J.
- Subaru announces pricing on all-new 2008 Impreza WRX STI — Subaru of America (hosted by The Auto Channel) (mfr spec; read 2026-10-26; full page read)2008 STI: 18x8.5 standard, BBS forged optional, 245/40R18.
- Tech Tips: 2004-2018 Subaru STI (factory wheel specs) — STM Tuned (performance shop) (vendor article; read 2026-10-22; search excerpt only)2008-17 STI 18x8.5 +55, 56.1 mm, M12x1.25.
Summaries are in our own words. Fitment is not guaranteed — disclaimer.
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