2018 Buick Regal TourX Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2018 Buick Regal TourX, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x115 |
|---|---|
| Lug Nut / Bolt Size | 12x1.5 |
| Center Bore (CB) | 70.3 mm |
| Offset (ET) | 49 |
| Torque Specs | 80 ft-lbs (108 Nm) |
2018 Regal TourX — Year-Specific Fitment Context
The 2018 model year marks the beginning of the Buick Regal TourX's 5x115 bolt pattern era, which continued through 2020 (3 consecutive years). Wheels from any 2018–2020 Buick Regal TourX are cross-compatible with the 2018 model.
Buick Regal TourX Bolt Pattern by Year
The table below shows how the Regal TourX's wheel specifications have changed over the years. The 2018 model year is highlighted.
5x115 Pattern Context
This bolt pattern appears on 498 vehicles in our current database and is considered moderately common.
Examples of other vehicles using 5x115:
Expert Buying Guide for 2018 Buick Regal TourX
For your 2018 Buick Regal TourX, the bolt pattern is 5x115 with a center bore of 70.3mm. When selecting aftermarket wheels, ensure they have a larger center bore and use hub-centric rings to prevent vibrations and ensure proper load distribution. The factory offset is 49mm; deviations beyond ±5mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (12x1.5) and seat type—factory uses conical (60-degree) seats. Using incorrect lug nuts can lead to wheel detachment. For optimal safety, choose wheels with load ratings matching or exceeding OEM specifications.
Historical Fitment Data Reference
In our dataset, Buick Regal TourX appears from 2018 to 2020 (3 model years). Across recorded model years, this model generally keeps the same bolt pattern.
- Observed bolt-pattern variants for this model: 1
- Observed center-bore variants for this model: 1
- Observed lug-size variants for this model: 1
- Observed total offset span across years: 0.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50-100 miles of driving to maintain proper clamping force.
- ✅ Avoid using universal fit wheels without hub-centric rings; they can cause vibrations and stress on studs.
- ✅ Check inner clearance for aftermarket wheels; the TourX has limited space near struts and brake calipers.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
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2018 Buick Regal TourX — Frequently Asked Questions
What is the bolt pattern for a 2018 Buick Regal TourX?
The 2018 Buick Regal TourX uses a 5x115 bolt pattern (also called lug pattern or PCD). The center bore is 70.3mm and the offset is 49mm.
What other years of Buick Regal TourX have the same bolt pattern as the 2018?
The Buick Regal TourX uses the 5x115 pattern from 2018 through 2020. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
Can I put aftermarket wheels on my 2018 Buick Regal TourX?
Absolutely. Just ensure the aftermarket wheels have a 5x115 bolt pattern, an offset near 49mm, and a center bore of at least 70.3mm (using hub rings if larger).
Will wheels from another Buick fit my 2018 Regal TourX?
Only if they share the exact same 5x115 bolt pattern, a compatible offset, and a center bore equal to or larger than 70.3mm.
Why is matching the 70.3mm center bore important for the 2018 Regal TourX?
The 70.3mm center bore ensures the wheel is perfectly centered on the hub. If the wheel is lug-centric instead of hub-centric, you may experience steering wheel vibration at highway speeds.
What is the factory wheel offset for a 2018 Buick Regal TourX?
The OEM offset for the 2018 Regal TourX is typically around 49mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
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