200 Wheel Bolt Pattern Calculator: Fitment Guide

This calculator compares two wheel bolt patterns using bolt count and the diameter of the circle through the bolt centers. Enter the values in millimeters or inches; it returns each pattern’s pitch-circle diameter (PCD) in both units so you can identify a match before checking the rest of the fitment.

Formula

For a listed bolt pattern, PCD is the diameter of the circle passing through the centers of the wheel’s mounting holes. This calculator compares supplied bolt counts and diameters:

difference = |n1 − n2| + |d1 − d2|; the patterns match when the difference is zero. Inch conversion is diameter in inches = diameter in millimeters ÷ 25.4.

n1 and n2 are bolt counts, in holes; d1 and d2 are PCD diameters, in millimeters. The two final outputs convert each diameter to inches. The match result is 0 for identical entered count and diameter, and 1 otherwise; it is a simple comparison, not a tolerance test.

Worked Example

Using the calculator’s defaults:

• Pattern A: 5 bolts, 114.3 mm PCD.
• Pattern B: 5 bolts, 114.3 mm PCD.
• Difference: |5 − 5| + |114.3 − 114.3| = 0, so the match output is 0 (yes).
• Pattern A: 114.3 ÷ 25.4 = 4.50 in; Pattern B: 114.3 ÷ 25.4 = 4.50 in.

Both patterns therefore have the same entered bolt count and nominal PCD.

How to Use This List

The 200 entries below are common calculator checks and fitment references, not a universal database of vehicle specifications. Use them to understand common notation, choose the right measurement method, and organize a comparison. For an actual wheel purchase or installation, confirm the vehicle and wheel specifications from reliable fitment documentation or direct measurement.

Enter the number of holes and the PCD for each pattern. A pattern written as 5×114.3 means five holes on a 114.3 mm circle; 5×4.5 means five holes on a 4.5-inch circle. Convert units before comparing. Even an exact PCD match does not establish that a wheel fits safely: center bore, offset, width, thread, load capacity, brake clearance, and seat type matter too.

200 Bolt-Pattern Calculator References

Reading the Notation

1. 5×114.3 mm. Five holes sit on a 114.3 mm pitch circle, a widely encountered metric specification.
2. 5×4.5 in. This inch notation equals 5×114.3 mm after conversion.
3. 4×100 mm. Four holes are spaced on a 100 mm circle; bolt count is part of the specification.
4. 4×4.5 in. This is approximately 4×114.3 mm, not 4×100 mm.
5. 6×139.7 mm. The diameter converts to 5.5 inches, a common six-lug notation.
6. 6×5.5 in. This is the inch expression of 6×139.7 mm.
7. 5×120 mm. Do not treat it as identical to 5×4.75 in; the converted value is 120.65 mm.
8. 5×4.75 in. Convert to 120.65 mm before comparing with metric data.
9. 5×100 mm. Keep it distinct from 5×4.0 in, which converts to 101.6 mm.
10. 5×4.0 in. Its nominal PCD is 101.6 mm, not exactly 100 mm.
11. 4× bolt count. Count the mounting holes, rather than the spaces between them.
12. PCD diameter. Measure across the circle through hole centers, not across the wheel’s outer edge.
13. Metric notation. The number after the multiplication sign is usually expressed in millimeters.
14. Inch notation. Convert inches by multiplying by 25.4 to get millimeters.
15. Mixed-unit comparison. Convert both values to the same unit before entering them.
16. Nominal size. A rounded catalog value may conceal a small difference, so verify exact specifications.
17. Hole centers. PCD refers to centers of the mounting holes, not their inner or outer edges.
18. Five-lug measurement. Five-hole patterns need a suitable measurement method because no opposite pair lies across the center.
19. Even-lug measurement. With four or six holes, measure between opposite hole centers where accessible.
20. Pattern identity. Both hole count and PCD must agree for the nominal bolt pattern to match.

Useful Calculator Checks

21. Compare identical inputs. Equal counts and equal diameters return a match indicator of 0.
22. Check different hole counts. A four-lug and five-lug wheel cannot share the same bolt pattern.
23. Check close diameters. A small numerical difference still returns no exact match in this calculator.
24. Convert 100 mm. It is about 3.94 inches, useful for checking an inch-based listing.
25. Convert 108 mm. It is about 4.25 inches, a helpful unit cross-check.
26. Convert 112 mm. It is about 4.41 inches when expressed in customary units.
27. Convert 120 mm. It is about 4.72 inches; do not round it to 4.75 without checking tolerance.
28. Convert 127 mm. It is exactly 5 inches by the standard conversion factor.
29. Convert 139.7 mm. It equals 5.5 inches.
30. Convert 165.1 mm. It equals 6.5 inches.
31. Round display values carefully. The calculator shows inches to two decimals, which can hide tiny differences.
32. Retain source precision. Use the manufacturer’s unrounded specification when it is available.
33. Check the source unit. A bare number such as 114.3 is incomplete without its unit.
34. Avoid guessed inputs. Measure or look up bolt count and PCD instead of estimating by eye.
35. Use consistent decimals. Enter 114.3 rather than 114 when the source specifies 114.3 mm.
36. Interpret the indicator. It compares the entered numbers only; it does not certify fitment.
37. Test the conversion. Multiplying the displayed inches by 25.4 should recover the millimeter input approximately.
38. Check rounding at boundaries. A displayed 4.50 inches could represent a more precise underlying value.
39. Compare specifications, not labels. Similar marketing terms do not substitute for the exact count and PCD.
40. Record both values. Write down lug count and PCD together to avoid mixing wheel specifications.

Measurement and Verification

41. Use a caliper or suitable ruler. A stable measuring tool reduces reading errors.
42. Measure from centers. Hole-center distances define the bolt circle.
43. Consult wheel documentation. Manufacturer specifications are preferable to informal listings.
44. Check the vehicle manual. It can identify the intended wheel and fastener specifications.
45. Verify the actual wheel. Replacement wheels may differ from the original equipment.
46. Do not force a test fit. Misaligned holes indicate a mismatch or another obstruction.
47. Check all holes. A wheel should align across every mounting position, not just one pair.
48. Inspect for damage. Bent or elongated holes make measurements and fitment uncertain.
49. Account for coatings. Paint or corrosion can obscure hole edges, so locate centers carefully.
50. Use a pattern gauge. A dedicated gauge can help identify common PCDs accurately.
51. Measure in one unit. Record the result in millimeters or inches before comparing.
52. Repeat uncertain readings. Multiple consistent measurements help reveal a setup error.
53. Check the hub pattern. The wheel and vehicle hub each have specifications that must correspond.
54. Look for dual-drilled wheels. Some wheels have two bolt circles; identify the correct set of holes.
55. Do not infer from vehicle model alone. Trim and production variations can affect specifications.
56. Confirm model year. Specifications may vary between generations or years.
57. Check wheel markings. Cast or stamped identifiers may provide useful details, but verify them.
58. Ask a qualified installer. Seek help if the pattern or measurement is ambiguous.
59. Clean the mounting face. Debris can prevent a wheel from seating flat during a check.
60. Separate diagnosis from installation. A calculator is a screening aid, not an installation procedure.

Common Pattern Values

61. 4×98 mm. A compact four-lug pattern; verify the specific vehicle application.
62. 4×100 mm. A common compact-car pattern that should not be confused with 4×101.6 mm.
63. 4×108 mm. A distinct four-lug PCD; compare exact values rather than rounded inches.
64. 4×114.3 mm. This converts to 4×4.5 inches.
65. 5×98 mm. Check the precise PCD because a nearby pattern is not automatically interchangeable.
66. 5×100 mm. Frequently listed in millimeters; retain the full 100 mm value.
67. 5×108 mm. A common catalog entry, but vehicle application still needs confirmation.
68. 5×110 mm. It differs from 5×108 mm despite the small numerical gap.
69. 5×112 mm. Compare against exact specifications instead of assuming compatibility with 5×114.3.
70. 5×114.3 mm. Also written as 5×4.5 inches.
71. 5×115 mm. This is not the same nominal value as 5×114.3 mm.
72. 5×120 mm. Keep separate from 5×120.65 mm unless vehicle documentation specifies otherwise.
73. 5×120.65 mm. This equals 5×4.75 inches.
74. 5×127 mm. This is 5×5 inches.
75. 5×130 mm. Use the exact specification when comparing this less-rounded metric value.
76. 5×139.7 mm. This equals 5×5.5 inches.
77. 6×114.3 mm. The same PCD diameter as 5×4.5, but a different lug count.
78. 6×127 mm. Equivalent to a 6×5-inch pattern.
79. 6×135 mm. A common six-lug reference value; confirm the specific hub.
80. 6×139.7 mm. Equivalent to 6×5.5 inches.

Conversions and Precision

81. 25.4 mm per inch. This exact conversion factor underlies the calculator’s inch outputs.
82. Inches to millimeters. Multiply the inch diameter by 25.4.
83. Millimeters to inches. Divide the millimeter diameter by 25.4.
84. Keep decimal precision. Do not round the input before comparing patterns.
85. Use a consistent source. Manufacturer data and measured data may have different precision.
86. Distinguish rounding from tolerance. A rounded match does not prove a physical fit.
87. Use leading zeros sensibly. Enter 0.5 inches as 0.5, not as an ambiguous shorthand.
88. Check decimal separators. Use a decimal point if the calculator expects one.
89. Do not enter the radius. The required value is the circle’s diameter.
90. Do not enter wheel diameter. Rim size is unrelated to bolt-circle diameter.
91. Keep bolt count whole. Hole count is an integer, such as four, five, or six.
92. Check copied values. A misplaced decimal point can create a large error.
93. Compare unrounded values. Use the calculator’s millimeter fields for metric source figures.
94. Interpret 4.50 correctly. It is a PCD diameter, not a wheel’s rim diameter.
95. Use meaningful units. Label handwritten measurements to prevent later confusion.
96. Watch significant digits. A two-decimal display is a presentation choice, not measurement certainty.
97. Recalculate conversions independently. A quick 25.4 check can catch a unit-entry mistake.
98. Do not mix radius and diameter. Doubling or halving the wrong measurement changes the pattern.
99. Use exact notation in records. Write, for example, 5×114.3 mm rather than “114 pattern.”
100. Preserve the original spec. Keep the catalog’s stated unit alongside converted values.

Fitment Factors Beyond PCD

101. Center bore. Confirm the wheel’s center opening suits the hub arrangement.
102. Offset. Wheel offset affects the wheel’s position relative to suspension and bodywork.
103. Wheel width. Width affects tire choice and clearance even when the bolt pattern matches.
104. Rim diameter. The wheel must also clear brakes and suit the intended tire.
105. Fastener thread. Match the required bolt or stud thread specification.
106. Seat style. Lug nuts and bolts need the correct conical, spherical, or flat seat for the wheel.
107. Fastener length. Confirm engagement and clearance using the applicable vehicle guidance.
108. Load rating. The wheel’s capacity must meet the vehicle’s requirements.
109. Brake clearance. Spokes and barrel shape can interfere with brake components.
110. Suspension clearance. Check clearance through the relevant steering and suspension range.
111. Body clearance. Tire and wheel dimensions can affect fender clearance.
112. Tire dimensions. A matching bolt pattern does not establish tire compatibility.
113. Hub-centric rings. These address certain center-bore differences, not a bolt-pattern mismatch.
114. Spacers. A spacer does not make an incompatible PCD inherently safe.
115. Adapters. Adapters add their own specifications and clearance requirements.
116. Wheel condition. Cracks, bends, or damaged seats require separate inspection.
117. Hub condition. Corrosion or damage can prevent proper seating.
118. Fastener torque. Follow the vehicle or wheel maker’s specified procedure and value.
119. Professional fitment check. Get qualified help where clearance or hardware compatibility is uncertain.
120. Full assembly fit. Confirm wheel, tire, hub, and fasteners together rather than relying on PCD alone.

Vehicle and Wheel Research

121. Start with the exact vehicle. Record year, model, trim, and relevant drivetrain details.
122. Check original equipment data. It provides a starting point, not proof for an aftermarket wheel.
123. Check replacement-wheel data. The wheel’s own specifications must be identified separately.
124. Compare front and rear. Some vehicles use different wheel specifications by axle.
125. Note optional packages. Factory wheel options can change dimensions and clearance.
126. Verify production changes. Mid-generation updates may affect fitment information.
127. Read all wheel markings. Look for size, offset, and identifying codes as well as PCD.
128. Confirm bolt versus stud hardware. The mounting system influences fastener selection.
129. Do not rely on a single listing. Cross-check a questionable specification.
130. Distinguish model name from generation. Similar names can cover different hubs.
131. Record measurement provenance. Note whether a value came from a manual, wheel marking, or measurement.
132. Check original fasteners. Their seat and thread may not suit a replacement wheel.
133. Verify spare-wheel fitment. Temporary spares can have different limits and specifications.
134. Look for multi-fit holes. Identify which holes correspond to the intended bolt circle.
135. Check application notes. A wheel listing may exclude certain brake or trim combinations.
136. Keep units visible. Record millimeters or inches beside every PCD number.
137. Confirm hub-face seating. The mounting surfaces should meet as specified.
138. Use a qualified parts source. Ask for clarification when application details conflict.
139. Save the exact specification. It makes later comparisons less error-prone.
140. Recheck before installation. Confirm the wheel in hand matches the documented values.

Common Comparison Mistakes

141. Matching only the lug count. Five holes alone do not identify a bolt pattern.
142. Matching only the diameter. A four-lug and five-lug pattern remain different.
143. Confusing rim size with PCD. A 17-inch wheel size says nothing about its bolt circle.
144. Comparing inches to millimeters directly. Convert first to avoid a false mismatch.
145. Rounding 120.65 to 120. That can conceal a meaningful specification difference.
146. Assuming nearby values are interchangeable. Small numerical gaps still require verified compatibility.
147. Measuring hole edges. The PCD is defined through the hole centers.
148. Measuring one span incorrectly. Five-lug geometry needs an appropriate method, not a guessed opposite pair.
149. Entering radius as PCD. The calculator expects the full diameter.
150. Ignoring measurement uncertainty. A ruler reading may not justify extra decimal places.
151. Trusting a rounded label. Seek the complete specification if fitment is critical.
152. Assuming an adapter solves everything. It adds fitment and clearance questions.
153. Ignoring center bore. Matching PCD does not guarantee proper hub centering.
154. Ignoring offset. A correct pattern can still place the wheel incorrectly.
155. Using unsuitable fasteners. Incorrect seat or thread can prevent secure mounting.
156. Forcing bolts into holes. Resistance can signal misalignment or incompatible hardware.
157. Overlooking dual patterns. Check which drilled circle is intended for your application.
158. Assuming every trim matches. Verify the exact vehicle configuration.
159. Trusting a yes/no result as approval. The output checks numbers, not complete safety.
160. Skipping a final inspection. Verify the full assembly before use.

Practical Calculator Scenarios

161. Check a used wheel listing. Compare its stated count and PCD with the vehicle specification.
162. Resolve an inch listing. Convert its PCD to millimeters before comparing with metric data.
163. Check a measurement. Compare the measured diameter with a documented nominal value.
164. Compare two wheel sets. Enter each set separately to identify a nominal pattern difference.
165. Screen a replacement option. Rule out an obvious PCD mismatch before researching other dimensions.
166. Organize a parts inquiry. Give a supplier both bolt count and PCD, with units.
167. Check a conversion manually. Use 25.4 mm per inch to confirm the displayed result.
168. Understand a catalog format. Parse the first number as lug count and the second as PCD.
169. Compare workshop notes. Standardize units before deciding whether recorded measurements agree.
170. Evaluate a claimed match. Confirm the source values and do not rely solely on a rounded display.
171. Check front and rear wheels. Compare each axle’s specifications independently.
172. Review spare options. Verify the spare’s complete limitations beyond its PCD.
173. Identify missing information. Ask for a unit or hole count when a listing gives only a number.
174. Compare original and aftermarket wheels. Treat their PCD as one part of a larger fitment check.
175. Catch a decimal typo. Recheck unusually large or small entered diameters against the source.
176. Explain a mismatch. Share the two count-and-diameter pairs rather than saying they are “close.”
177. Document a purchase check. Keep the verified PCD with offset, width, bore, and hardware notes.
178. Verify a seller’s conversion. Convert the published unit independently before ordering.
179. Check a wheel marking. Compare the stamped specification with reliable application information.
180. Plan a professional inspection. Bring the recorded values when other fitment factors need review.

Safe Use and Limits

181. Use the calculator as a screen. It checks entered values, not a physical installation.
182. Confirm all specifications. PCD is only one dimension in wheel fitment.
183. Do not use force to test fit. Stop if holes or mounting surfaces do not align.
184. Follow vehicle instructions. Use the specified fastening and inspection procedure.
185. Use the correct hardware. Match threads and seats to the vehicle and wheel.
186. Have damage assessed. Do not use a wheel with uncertain structural condition.
187. Check clearance thoroughly. Static alignment alone may not reveal every interference point.
188. Respect load requirements. Confirm the wheel and tire ratings suit the application.
189. Do not infer legal approval. A numerical match is not a certification or regulatory check.
190. Do not infer tire suitability. Tire size and application need separate verification.
191. Use accurate measurement tools. Poor tools or access can make PCD readings unreliable.
192. Seek expert review for uncertainty. A qualified installer can assess the full assembly.
193. Account for manufacturing variation. Confirm fit against the maker’s specification, not assumed tolerance.
194. Keep fasteners clean and sound. Damaged hardware should be addressed according to applicable guidance.
195. Never substitute a near match casually. Similar PCD numbers are not evidence of safe interchange.
196. Recheck after wheel changes. Follow the applicable vehicle instructions for installation checks.
197. Read the complete wheel spec. PCD alone omits important dimensions and ratings.
198. Ask before modifying components. Changes to hubs or mounting hardware need knowledgeable assessment.
199. Preserve source records. Keep the vehicle and wheel specifications used in the comparison.
200. Make the final decision on full fitment. Confirm pattern, hardware, dimensions, load, and clearance together.

How to Use This List

Use the references to recognize notation and spot unit errors, then enter verified specifications in the calculator. First confirm hole count, then PCD and unit; a difference in either count or diameter means the nominal patterns do not match. Treat close or rounded values as a prompt to check the original source, not as permission to force a fit. Before installation, verify center bore, offset, wheel dimensions, fasteners, load rating, and clearance for the exact vehicle.

Frequently Asked Questions

What does 5×114.3 mean? It means five mounting holes arranged on a circle with a 114.3 mm diameter.

Is 5×4.5 the same as 5×114.3? Nominally, yes: 4.5 inches converts to 114.3 mm. Confirm exact specifications and full fitment.

Can two wheels with the same PCD still be incompatible? Yes. Center bore, offset, width, fastener seat and thread, load capacity, and clearance also matter.

Does the calculator allow for tolerances? No. It compares the entered numbers exactly and does not evaluate manufacturing tolerances or physical fit.

How do I measure a five-lug PCD? Use a proper bolt-pattern gauge or a reliable measurement method for five-hole geometry; avoid guessing from an opposite pair that does not exist.

Final Thoughts

A wheel bolt pattern calculator is useful for comparing lug count and PCD and converting units. Use exact specifications, then confirm every other fitment and safety requirement before mounting a wheel.

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in n1 | Pattern A bolt count | - | 5 | 0
in d1 | Pattern A bolt-circle diameter | mm | 114.3 | 0
in n2 | Pattern B bolt count | - | 5 | 0
in d2 | Pattern B bolt-circle diameter | mm | 114.3 | 0
out match | Same bolt pattern | 0=yes, 1=no | abs(n1-n2)+abs(d1-d2) | 0
out d1in | Pattern A diameter | in | d1 / 25.4 | 2
out d2in | Pattern B diameter | in | d2 / 25.4 | 2