If you’re planning to replace or upgrade your wheels, it’s crucial to understand your car’s bolt pattern. The bolt pattern refers to the number of lug holes and the diameter of the circle they form. This guide will walk you through how to measure bolt pattern car accurately at home using simple tools. Whether you’re a car enthusiast or a beginner, this easy DIY method will help ensure you get the right fit every time.
What Is a Bolt Pattern?
A bolt pattern (also known as lug pattern or PCD – Pitch Circle Diameter) indicates how many bolts (or lugs) are on the wheel and how far apart they are spaced. Common formats include:
- 5×114.3 (5 bolts, 114.3mm apart)
- 4×100, 6×139.7, etc.
Knowing your vehicle’s bolt pattern is critical when purchasing new wheels, spacers, or hub-centric rings.
Tools You’ll Need to Measure Bolt Pattern Car
To measure your car’s bolt pattern at home, you’ll need:
- A tape measure or ruler (in millimeters preferred)
- A digital caliper (for higher precision – available here)
- Pen and paper
How to Measure Bolt Pattern on a Car Wheel (DIY Guide)
✅ Step 1: Count the Lug Holes
- Most passenger cars have 4, 5, 6, or 8 lug holes.
- Count the total number around the wheel hub.
✅ Step 2: Measure the Bolt Circle Diameter
- For 4, 6, or 8 lugs (even number): Measure from the center of one lug hole to the center of the one directly across from it.
- For 5 lugs (odd number): Measure from the center of one hole to the outer edge of the hole directly across from it (not center to center).
Pro Tip: Use a digital caliper to get precise millimeter readings.
🧮 Bolt Pattern Formula
Use this format:
- 4 Lug: 4 x (distance in mm)
- 5 Lug: 5 x (distance in mm, center to outer edge)
Example: If your 5-lug wheel measures 114.3mm across, then the pattern is 5×114.3.
🧰 Use Online Tools for Quick Reference
If you know your vehicle’s make, model, and year, use free resources like:
They provide exact factory bolt patterns and wheel fitment specs.
Popular Bolt Patterns by Vehicle Brand
| Vehicle Brand | Common Bolt Patterns |
|---|---|
| Honda | 4×100, 5×114.3 |
| Toyota | 5×114.3, 6×139.7 |
| Ford | 5×114.3, 5×108 |
| Mercedes-Benz | 5×112 |
| BMW | 5×120 |
Bolt Pattern vs Lug Pattern vs PCD
These terms are often used interchangeably:
- Bolt Pattern = the number of bolts and the circle diameter
- Lug Pattern = another name for bolt pattern
- PCD (Pitch Circle Diameter) = metric term (used globally)
They all refer to the same concept when measuring bolt pattern for your car.
Common Mistakes When Measuring Bolt Pattern
- Measuring 5-lug patterns center-to-center (this gives incorrect results)
- Using inches instead of millimeters (use metric for accuracy)
- Not measuring across the correct holes
Always double-check your measurement before ordering wheels or accessories.
Related Posts
- How to Know If Rims Will Fit Your Car
- Lug Pattern Guide – USA Cars
- Universal Fit vs Vehicle-Specific Caps
FAQ – How to Measure Bolt Pattern Car
Q: Can I measure bolt pattern without removing the wheel?
A: Yes, you can measure from the outside of the mounted wheel, but results may be slightly off. Removing the wheel gives the best accuracy.
Q: What does 5×114.3 mean?
A: It means the wheel has 5 lug holes spaced across a 114.3mm diameter circle.
Q: Are all 5-lug wheels the same?
A: No. 5-lug wheels come in different patterns (e.g., 5×100, 5×114.3, 5×120) that are not interchangeable.
Q: Can I convert my bolt pattern?
A: In some cases, you can use wheel adapters, but it’s not always safe or recommended. Consult a professional.
Final Thoughts
Learning how to measure bolt pattern car at home is a skill every DIY car owner should master. With a ruler or digital caliper and our simple guide, you can confidently shop for wheels, spacers, and accessories without guesswork.
📦 Need help finding bolt-pattern tools or caps? Explore Amazon’s automotive section for top-rated products.
