2018 Kia Optima Plug-in Hybrid Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2018 Kia Optima Plug-in Hybrid, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 5x114.3 (5x4.5") |
|---|---|
| Lug Nut / Bolt Size | 12x1.5 |
| Center Bore (CB) | 67.1 mm |
| Offset (ET) | 35-50 |
| Torque Specs | 80 ft-lbs (108 Nm) |
Imperial Match: 5x114.3 is commonly referred to as 5x4.5" in US Standard.
2018 Optima Plug-in Hybrid — Year-Specific Fitment Context
The 2018 Kia Optima Plug-in Hybrid is in year 2 of 4 using the 5x114.3 pattern (2017–2020). Wheels from any 2017–2020 Kia Optima Plug-in Hybrid are cross-compatible with the 2018 model.
Kia Optima Plug-in Hybrid Bolt Pattern by Year
The table below shows how the Optima Plug-in Hybrid's wheel specifications have changed over the years. The 2018 model year is highlighted.
5x114.3 Pattern Context
This bolt pattern appears on 2902 vehicles in our current database and is considered very common.
Examples of other vehicles using 5x114.3:
Expert Buying Guide for 2018 Kia Optima Plug-in Hybrid
For the 2018 Kia Optima Plug-in Hybrid, the 5x114.3 bolt pattern is shared with 2017–2020 models, ensuring cross-compatibility. The 67.1mm center bore is critical: aftermarket wheels with a larger bore require hub-centric rings to prevent vibration and ensure proper load distribution. Offset must stay within 35–50mm; deviations risk rubbing or suspension interference. Always use lug nuts with the correct 12x1.5 thread pitch and matching seat type (cone or ball) to avoid wheel loosening. Verify lug nut engagement—at least 6–8 full turns—and torque to manufacturer specs (typically 80–90 ft-lbs). Never reuse old lug nuts with new wheels.
Historical Fitment Data Reference
In our dataset, Kia Optima Plug-in Hybrid appears from 2017 to 2020 (4 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: 2
- Observed total offset span across years: 91.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts after 50–100 miles of driving to account for wheel settling.
- ✅ Avoid using universal fitment wheels without hub-centric rings; they can cause steering wheel vibration at highway speeds.
- ✅ If installing aftermarket wheels, confirm the offset is within 35–50mm to prevent brake caliper clearance issues.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Confirm bolt pattern carefully. 5x114.3 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 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
Ready to upgrade or perform maintenance?
🛒 Shop Tools & Accessories on AmazonAs an Amazon Associate, I earn from qualifying purchases.
2018 Kia Optima Plug-in Hybrid — Frequently Asked Questions
What is the bolt pattern for a 2018 Kia Optima Plug-in Hybrid?
The 2018 Kia Optima Plug-in Hybrid uses a 5x114.3 bolt pattern (also called lug pattern or PCD). The center bore is 67.1mm and the offset is 35-50mm.
What other years of Kia Optima Plug-in Hybrid have the same bolt pattern as the 2018?
The Kia Optima Plug-in Hybrid uses the 5x114.3 pattern from 2017 through 2020. Wheels from any of these model years are dimensionally compatible with the 2018, provided the offset and center bore also match.
What is the PCD for a 2018 Kia Optima Plug-in Hybrid?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2018 Optima Plug-in Hybrid, the PCD is 5x114.3.
Why is matching the 67.1mm center bore important for the 2018 Optima Plug-in Hybrid?
The 67.1mm 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.
Do 2018 Kia Optima Plug-in Hybrids use lug bolts or lug nuts?
The 2018 Optima Plug-in Hybrid requires 12x1.5 hardware. Check your specific trim to ensure you use the correct conical or spherical seating.
How tight should I torque the lug nuts on a 2018 Kia Optima Plug-in Hybrid?
Refer to your owner's manual for exact specs, but always tighten the 12x1.5 hardware in a star or crisscross pattern. Re-torque after the first 50 miles of driving.
Need more vehicle fitment data?
Access our complete, raw JSON/CSV database of over 11,000+ vehicles for your next app or project.
Get the Full Dataset