What is the difference between 6×135 and 6×139.7 bolt patterns? The primary difference between 6×135 and 6×139.7 bolt patterns lies in their diameter measurements. The 6×135 pattern has a diameter of 135 millimeters between the center of opposite bolts, while the 6×139.7 pattern measures 139.7 millimeters. These variations are crucial for ensuring a proper fit on different vehicle types.
Understanding Bolt Patterns
Bolt patterns, often referred to as lug patterns or PCD (Pitch Circle Diameter), are critical in determining the compatibility of wheels with a vehicle. They represent the number of bolts and the diameter of the circle on which these bolts are arranged. For example, a 6×135 bolt pattern means there are six bolts arranged in a circle with a 135 mm diameter.
Why Bolt Patterns Matter
- Vehicle Compatibility: Different vehicles require specific bolt patterns for the wheels to fit securely.
- Safety: Using the correct bolt pattern ensures that the wheels are properly aligned and secured, reducing the risk of accidents.
- Performance: Properly fitted wheels can enhance vehicle performance and handling.
Comparing 6×135 and 6×139.7 Bolt Patterns
To better understand the differences, let’s compare these two bolt patterns in a simple table:
| Feature | 6×135 Bolt Pattern | 6×139.7 Bolt Pattern |
|---|---|---|
| Diameter | 135 mm | 139.7 mm |
| Common Vehicles | Ford F-150, Lincoln Navigator | Toyota Tacoma, Chevrolet Silverado |
| Typical Use | Light trucks, SUVs | Trucks, SUVs |
| Availability | Widely available | Widely available |
Practical Examples
- Ford F-150: This popular truck often uses the 6×135 bolt pattern, making it crucial for owners to select wheels that match this specification.
- Toyota Tacoma: Known for its reliability, the Tacoma typically uses the 6×139.7 bolt pattern, ensuring compatibility with a wide range of aftermarket wheels.
How to Measure Bolt Patterns
Measuring a bolt pattern involves a few simple steps:
- Count the Bolts: Identify the number of bolts on the wheel.
- Measure the Diameter: For a six-bolt pattern, measure from the center of one bolt to the center of the bolt directly across from it.
Tools Needed
- Tape Measure: A standard tape measure can be used to determine the diameter.
- Caliper: For more precision, use a caliper to measure the distance between bolts.
Common Mistakes to Avoid
- Assuming Compatibility: Never assume that wheels with a similar appearance will fit; always verify the bolt pattern.
- Ignoring Offset: While bolt patterns are crucial, wheel offset and backspacing also impact fitment.
- Mismatched Patterns: Attempting to fit a 6×135 wheel on a 6×139.7 hub can lead to unsafe driving conditions.
People Also Ask
What vehicles use a 6×135 bolt pattern?
Vehicles such as the Ford F-150, Ford Expedition, and Lincoln Navigator commonly use the 6×135 bolt pattern. These are typically light trucks and SUVs that require this specific pattern for optimal wheel fitment.
Can I use a 6×139.7 wheel on a 6×135 hub?
No, using a 6×139.7 wheel on a 6×135 hub is not recommended. The diameter difference can lead to improper fitment and unsafe driving conditions. Always ensure the wheel and hub patterns match exactly.
How do I convert between bolt patterns?
Converting between bolt patterns typically requires adapters or spacers. However, these can affect vehicle performance and safety, so it’s best to use wheels designed for your specific bolt pattern.
Are bolt pattern adapters safe?
While bolt pattern adapters can be used to fit wheels with different patterns, they can introduce additional stress and potentially compromise safety. It’s critical to use high-quality adapters and have them installed by a professional.
What is the importance of wheel offset in relation to bolt patterns?
Wheel offset refers to the distance from the hub mounting surface to the wheel’s centerline. It affects how the wheel sits relative to the suspension and bodywork. Proper offset ensures that the wheel fits without rubbing against the vehicle’s components.
Conclusion
Understanding the difference between 6×135 and 6×139.7 bolt patterns is essential for selecting the right wheels for your vehicle. Proper fitment ensures safety, performance, and longevity of both the wheels and the vehicle. Always verify the bolt pattern before purchasing wheels, and consult with professionals if you’re unsure about compatibility. For more information on vehicle maintenance and upgrades, consider exploring related topics such as wheel offset and tire selection.
