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Understanding Bolt Patterns

Bolt Patterns

What is a bolt pattern? The bolt pattern consists of lug holes, three or more holes surrounding the large hub bore located at the center of the wheel. A bolt pattern refers to the pattern required to bolt a wheel/rim on your vehicle. The lug holes are the points on the wheel that accept the lug nut or lug bolt to securely fasten the wheel to your vehicle.

The lug holes on your wheels may be small, but they perform a big task by making sure your wheels stay securely fastened to your vehicle. These lug holes are organized in a circular pattern called a bolt pattern, and this pattern helps determine which wheels fit on your vehicle.

Remember, your vehicle will only accept a wheel with the same bolt pattern as the original equipment wheel. Your bolt pattern is specific to your vehicle.

There are several types of lug hole seats and they are designed to work with the precisely matched lug nut/bolt type. A ball-seat lug nut/bolt will work with wheels that have a corresponding round lug seat. An acorn-seat lug nut/bolt is used with wheels that have a tapered lug seat. Torque-retention, mag and shank style lugs all have a flat, washer-like seat area that will correspond to a flat lug seat in the wheel. When using a torque-retention, mag or shank lug, it is important to make sure that the shank is the proper length for your needs. Using lug nuts that don’t correspond to the lug hole seat in the wheel can lead to lug hole damage, improperly secured wheels and even cause the wheel to detach from the vehicle: it is very important that you use the right lug nut/bolt.

If you buy replacement lug nuts/bolts, they may not work with your spare wheel. Unless you buy a new wheel and tire to replace the spare, we recommend keeping enough of the original equipment lug nuts/bolts to properly install the original spare should the need arise.

Different Types of Bolt Patterns

Discount Tire sells wheels with 3, 4, 5, 6 and 8 lug bolt patterns, each of which are commonly equipped on certain vehicle types.

Understanding Bolt Patterns

Bolt Pattern conversion (Millimeter to Inches)

4-Lug Bolt Pattern Conversions (mm to Inches)
4-98mm = 4-3.86" 4-100mm = 4-3.94" 4-108mm = 4-4.25" 4-110mm = 4-4.33" 4-114.3mm = 4-4.5"
5-Lug Bolt Pattern Conversions (mm to Inches)
5-98mm = 5-3.86" 5-100mm = 5-3.94" 5-108mm = 5-4.25" 5-110mm = 5-4.33" 5-112mm = 5-4.41"
5-114.3mm = 5-4.5" 5-115mm = 5-4.52" 5-120mm = 5-4.72" 5-120.7mm = 5-4.75" 5-127mm = 5-5"
5-130mm = 5-5.12" 5-135mm = 5-5.3" 5-139.7mm = 5-5.5" 5-205mm = 5-8.07" 5-150mm = 5-5.91"
5-155mm = 5-6.1" 5-165.1mm = 5-6.5"      
6-Lug Bolt Pattern Conversions (mm to Inches)
6-114.3mm = 6-4.5" 6-115mm = 6-4.52" 6-127mm = 6-5" 6 x 132mm = 6 x 5.2" 6-135mm = 6-5.3"
6-139.7mm = 6-5.5"        
8-Lug Bolt Pattern Conversions (mm to Inches)
8-165.1mm = 8-6.5" 8-170mm = 8-6.69" 8-200mm = 8-7.87"    

How do I Measure a Bolt Pattern?

Bolt patterns are classified using a two number system. The first number indicates how many bolt holes are in the wheel, and the second describes the diameter of the imaginary circle they make. For example, a 5-100mm bolt pattern means that the wheel has 5 bolt holes equally spaced on a 100mm circle. This distance is measured across the wheel center. Usually, large vehicles have more bolts arranged in a larger bolt circle. Smaller vehicles typically have fewer bolts arranged in a smaller circle. The most accurate ways to measure bolt patterns are depicted in the illustrations below.


4-bolt patterns are measured in a straight line from center to center of two bolt holes sitting directly across from each other.


5-bolt patterns can be more difficult to measure since the bolt holes are not directly across from each other. You can estimate the measurement by using a straight line from the backside of one hole to the center of the third bolt hole. The accurate measurement is depicted here and can only be measured with a special tool called a bolt pattern gauge or by using a complex geometric equation.


6-bolt patterns are measured in a straight line from center to center of two bolt holes sitting directly across from each other.


8-bolt patterns are measured in a straight line from center to center of two bolt holes sitting directly across from each other.

What is a dual-drill bolt pattern?

In addition to the bolt patterns listed above, many manufacturers produce wheels with dual bolt patterns. 

Dual bolt patterns

Dual-drill bolt patterns have an additional set of bolt holes, enabling the wheel to accept two different bolt patterns. For example, a wheel with a 5-100/114.3 millimeter bolt pattern has ten total bolt holes. It can accommodate both the 5-100 millimeter bolt pattern and the 5-114.3 millimeter bolt pattern.

For more information or help measuring your bolt pattern, stop by any of our Discount Tire locations and we'll get you taken care of!

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