2020 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 2020 Cadillac CT6, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x120 |
|---|---|
| Lug Nut / Bolt Size | M14x1.5 |
| Center Bore (CB) | 66.9 mm |
| Offset (ET) | 30-40mm |
| Torque Specs | 100 ft-lbs (135 Nm) |
2020 CT6 — Year-Specific Fitment Context
The 2020 is the only model year of the Cadillac CT6 in our database using the 5x120 bolt pattern. Note: the 2019 model used a different pattern (5x120.65), so its wheels are NOT interchangeable with the 2020. Across its full production run (2016–2020), the CT6 has also used: 5x120.65.
Cadillac CT6 Bolt Pattern by Year
The table below shows how the CT6's wheel specifications have changed over the years. The 2020 model year is highlighted.
5x120 Pattern Context
This bolt pattern appears on 633 vehicles in our current database and is considered common.
Examples of other vehicles using 5x120:
Expert Buying Guide for 2020 Cadillac CT6
For the 2020 Cadillac CT6, the 5x120 bolt pattern is unique to this model year—2019 and earlier use 5x120.65, so wheels are not interchangeable. The center bore is 66.9mm; aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load distribution. Offset must stay within 30-40mm; deviating can cause rubbing or clearance issues with brakes and suspension. Always use M14x1.5 lug nuts with the correct seat type (cone or ball) as specified by the wheel manufacturer. Improper seating can lead to loosening or wheel separation. Verify all specs before installation.
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
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain clamping force.
- ✅ Double-check that aftermarket wheels are hub-centric; use rings if bore exceeds 66.9mm.
- ✅ Avoid mixing 5x120 and 5x120.65 wheels—they are not compatible despite similar appearance.
- ⚠️ Confirm bolt pattern carefully. 5x120 is often confused with other common 5-lug patterns.
- ⚠️ This fitment uses a wide offset range. Check brake clearance and fender clearance before buying wheels.
- ⚠️ 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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2020 Cadillac CT6 — Frequently Asked Questions
What is the bolt pattern for a 2020 Cadillac CT6?
The 2020 Cadillac CT6 uses a 5x120 bolt pattern (also called lug pattern or PCD). The center bore is 66.9mm and the offset is 30-40mmmm.
Can I use 2019 Cadillac CT6 wheels on a 2020?
No. The 2019 CT6 used a 5x120.65 bolt pattern, which differs from the 2020's 5x120. They are not interchangeable.
What is the factory wheel offset for a 2020 Cadillac CT6?
The OEM offset for the 2020 CT6 is typically around 30-40mmmm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
How do I measure the bolt pattern on my 2020 Cadillac?
The 2020 CT6 uses a 5x120 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.
What is the center bore of a 2020 Cadillac CT6?
The factory center bore (hub bore) for the 2020 Cadillac CT6 is 66.9mm. If your aftermarket wheels have a larger hub bore, you will need hub-centric rings to prevent vibration.
What does 30-40mmmm offset mean for the 2020 CT6?
An offset of 30-40mmmm means the wheel's mounting surface is 30-40mmmm away from its centerline. Changing this value drastically can affect suspension geometry and wheel bearing wear on your Cadillac.
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