2018 Cadillac CT6 Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2018 Cadillac CT6, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x120.65 (5x4.75") |
|---|---|
| Lug Nut / Bolt Size | N 14x1.50 |
| Center Bore (CB) | 67.1 mm |
| Offset (ET) | 32 |
| Torque Specs | 100 ft-lbs (135 Nm) |
Imperial Match: 5x120.65 is commonly referred to as 5x4.75" in US Standard.
2018 CT6 — Year-Specific Fitment Context
The 2018 Cadillac CT6 is in year 3 of 4 using the 5x120.65 pattern (2016–2019). Wheels from any 2016–2019 Cadillac CT6 are cross-compatible with the 2018 model. Across its full production run (2016–2020), the CT6 has also used: 5x120.
Cadillac CT6 Bolt Pattern by Year
The table below shows how the CT6's wheel specifications have changed over the years. The 2018 model year is highlighted.
5x120.65 Pattern Context
This bolt pattern appears on 202 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x120.65:
Expert Buying Guide for 2018 Cadillac CT6
For the 2018 Cadillac CT6, the 5x120.65 bolt pattern is shared with 2016–2019 models, ensuring cross-compatibility. The center bore of 67.1mm is critical; aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load distribution. Offset sensitivity is high—the factory offset is 32mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (14x1.50) and seat type: use conical (60-degree) or ball-seat lug nuts as specified. Improper lug nuts can lead to wheel loosening. Re-torque after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, Cadillac CT6 appears from 2016 to 2020 (5 model years). Across model years, this model appears with 2 bolt patterns (5x120, 5x120.65).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 72.0 mm
Quick Tips & Safety Warnings
- ✅ Always use hub-centric rings if aftermarket wheels have a bore larger than 67.1mm to avoid vibration.
- ✅ Stick to offset within 27-37mm to prevent tire rubbing on suspension or fenders.
- ✅ Re-torque lug nuts to 140 ft-lb after 50-100 miles; use a torque wrench to avoid over-tightening.
- ⚠️ Torque lugs in a star pattern to 100 ft-lbs (135 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2018 Cadillac CT6 — Frequently Asked Questions
What is the bolt pattern for a 2018 Cadillac CT6?
The 2018 Cadillac CT6 uses a 5x120.65 bolt pattern (also called lug pattern or PCD). The center bore is 67.1mm and the offset is 32mm.
What other years of Cadillac CT6 have the same bolt pattern as the 2018?
The Cadillac CT6 uses the 5x120.65 pattern from 2016 through 2019. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
What is the center bore of a 2018 Cadillac CT6?
The factory center bore (hub bore) for the 2018 Cadillac CT6 is 67.1mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
How tight should I torque the lug nuts on a 2018 Cadillac CT6?
Refer to your owner's manual for exact specs, but always tighten the N 14x1.50 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
What is the PCD for a 2018 Cadillac CT6?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2018 CT6, the PCD is 5x120.65.
How do I measure the bolt pattern on my 2018 Cadillac?
The 2018 CT6 uses a 5x120.65 pattern. For 4, 6, or 8-lug wheels, measure center-to-center across opposite holes. For 5-lug, measure from the center of one hole to the back of the opposite hole.
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