Ordering a replacement truck wheel is much easier when you have the correct measurements from the start. A wheel may look identical to your existing rim while having a different width, PCD, offset, centre bore or mounting configuration.
For 22.5-inch truck wheels, details such as 8.25, 9.00 or 11.75-inch width and 10/285 or 10/335 PCD can completely change which wheel you need.
Before ordering, the best approach is to gather as much information as possible from the existing wheel, vehicle and hub specifications rather than relying on appearance alone.
This guide covers the key truck wheel measurements to identify before purchasing a replacement.
What Measurements Do You Need for a Truck Wheel?
A truck wheel cannot usually be identified from one measurement alone.
Depending on the application, important information can include:
- Wheel diameter
- Wheel width
- Number of mounting holes
- PCD
- Centre bore
- Offset
- Stud-hole specification
- Load rating
- Axle application
- Wheel material
- Manufacturer or part number
Some of this information may already be marked on the existing wheel.
Before manually measuring anything, check for stamped, engraved or manufacturer identification information.
1. Check the Existing Truck Wheel Markings First
Before reaching for a measuring tool, inspect the existing wheel carefully.
Truck wheels can have identifying information stamped or marked on the wheel, potentially including:
- Wheel size
- Manufacturer
- Part number
- Load information
- Offset or other dimensional information
For example, you may find a marking such as:
8.25 × 22.5
This immediately provides two useful pieces of information: the nominal wheel width and diameter.
If a part number is visible, record it as well. A clear photograph of the markings can also be useful when making an enquiry about a replacement.
2. Identify the Truck Wheel Diameter
The second number in a wheel size such as 8.25 × 22.5 identifies the nominal wheel diameter.
In this example:
22.5 = 22.5-inch nominal wheel diameter
Mesh Wheels and Accessories carries a range of 22.5-inch truck wheels across multiple widths, materials and fitments.
Do not assume that every 22.5-inch wheel is interchangeable.
Diameter is only the beginning of the identification process.
3. Identify the Truck Wheel Width
The first number in the wheel size represents its nominal width.
For example:
8.25 × 22.5 = 8.25-inch nominal width
9.00 × 22.5 = 9.00-inch nominal width
11.75 × 22.5 = 11.75-inch nominal width
Mesh's truck wheel range includes selected wheels across all three of these widths.
Even though they share the same 22.5-inch diameter, they are different wheel sizes.
The required width should be confirmed against the existing wheel, tyre and vehicle specifications.
4. Count the Truck Wheel Mounting Holes
Next, identify the number of mounting holes.
Many wheels within the Mesh range use a 10-stud configuration.
However, counting 10 mounting holes does not tell you the complete stud pattern.
Two 10-stud wheels can have different PCD measurements and therefore different mounting configurations.
This is where PCD becomes important.
5. Identify the Truck Wheel PCD
PCD stands for Pitch Circle Diameter.
It describes the diameter of the imaginary circle passing through the centres of the wheel's mounting holes.
Two important configurations within the Mesh range are:
10/285
This means:
- 10 mounting holes
- 285 mm PCD
Within the Mesh range, 10/285 truck wheels are commonly associated with American truck applications.
10/335
This means:
- 10 mounting holes
- 335 mm PCD
Within the Mesh range, 10/335 truck wheels are commonly associated with European and Japanese truck applications.
The two patterns should not be confused simply because both use 10 mounting holes.
6. Check the Centre Bore
The truck wheel centre bore is the large circular opening in the centre of the wheel.
This dimension forms part of the wheel's hub and mounting specification.
Centre bore should not be confused with PCD.
PCD relates to the mounting-hole circle, while centre bore relates to the central opening.
A wheel can have the correct PCD but still differ in its centre bore or other dimensions.
If the centre-bore specification is not clearly identified, it should be accurately confirmed rather than estimated visually.
7. Check the Truck Wheel Offset
Wheel offset describes the position of the mounting surface relative to the wheel's centreline.
It affects where the wheel sits once installed on the vehicle.
This measurement can be particularly important when comparing:
- Different wheel widths
- Steer wheels
- Wider wheel configurations
- Similar wheels with different applications
Do not assume that two wheels have the same offset because their diameter, width and PCD match.
Offset should be treated as its own fitment specification.
8. Check the Stud-Hole Specification
The number of mounting holes and PCD are important, but the individual stud-hole specification may also need to be confirmed.
Do not assume every 10/285 or 10/335 wheel has an otherwise identical mounting arrangement.
If the existing wheel specifications identify the stud-hole dimensions or mounting system, include this information when looking for a replacement.
This helps narrow down wheels that may otherwise appear very similar.
9. Check the Truck Wheel Load Rating
The replacement wheel needs to have an appropriate load rating for its intended application.
A wheel's size and PCD do not tell you its load capacity.
Check the wheel and vehicle specifications to determine the required rating.
Do not choose a replacement wheel solely because its physical dimensions appear to match.
10. Identify Whether It Is a Steer, Drive or Trailer Wheel
Record where the replacement wheel will be used.
The main positions are:
- Steer
- Drive
- Trailer
Different applications can have different wheel requirements.
For example, selected 9.00 × 22.5 truck wheels within the Mesh range are intended for steer applications.
Knowing the axle position gives the supplier another important piece of information when identifying the correct wheel.
How to Read a Truck Wheel Size
A specification can initially look complicated, but separating each measurement makes it easier to understand.
For example:
8.25 × 22.5 – 10/335
This tells you:
| Marking | Meaning |
|---|---|
| 8.25 | Nominal wheel width in inches |
| 22.5 | Nominal wheel diameter in inches |
| 10 | Number of mounting holes |
| 335 | PCD in millimetres |
However, this still may not represent the complete specification.
You may also need the offset, centre bore, stud-hole specification, load rating and intended application.
Example: Identifying an 8.25 × 22.5 Truck Wheel
Imagine your existing wheel is marked 8.25 × 22.5.
You now know the width and diameter, but you still need to determine which specific 8.25 × 22.5 wheel is required.
Your next checks should include:
- Is it 10-stud?
- Is the PCD 10/285 or 10/335?
- What is the centre bore?
- What offset is required?
- What is the stud-hole specification?
- What load rating is required?
- Is it for a steer, drive or trailer application?
- Is there a manufacturer or part number available?
This information provides a much more useful identification than simply asking for an “8.25 × 22.5 wheel.”
Example: Identifying a 9.00 × 22.5 Truck Wheel
The same process applies to a 9.00 × 22.5 truck wheel.
The 9.00-inch width and 22.5-inch diameter narrow down the options, but you may still need to distinguish between different PCDs and offsets.
For example, Mesh offers selected 9.00 × 22.5 wheels in both 10/285 and 10/335 configurations.
Providing the full specification helps avoid confusion between wheels sharing the same basic dimensions.
Can You Identify a Truck Wheel From a Photo?
A photograph can be helpful, particularly if it clearly shows:
- The complete wheel
- Mounting holes
- Centre opening
- Wheel markings
- Manufacturer information
- Part numbers
However, a photo should not be used to guess measurements that cannot be accurately determined from the image.
Two truck wheels can look almost identical while having different PCDs, offsets or mounting specifications.
For the most reliable identification, combine photos with the wheel's markings and confirmed measurements.
What Information Should I Provide When Asking for a Truck Wheel?
If you're contacting a supplier about a replacement wheel, providing detailed information can make identification much easier.
Where available, provide:
- Truck make and model
- Existing wheel size
- Number of mounting holes
- PCD
- Centre bore
- Offset
- Stud-hole specification
- Axle position
- Wheel material
- Existing wheel part number
- Clear photographs of the wheel and markings
You may not have every measurement available, but the more information you can provide, the easier it is to narrow down the correct wheel.
Common Truck Wheel Measuring Mistakes
Avoid these common mistakes when identifying a replacement:
- Measuring only the wheel diameter.
- Assuming all 22.5-inch wheels are interchangeable.
- Counting the studs without checking PCD.
- Assuming every 10-stud wheel is 10/285.
- Assuming every 10-stud wheel is 10/335.
- Ignoring wheel width.
- Ignoring offset.
- Estimating centre bore visually.
- Choosing a wheel based only on appearance.
- Forgetting to check whether the wheel is for a steer, drive or trailer application.
A few extra checks before ordering can make wheel identification much more reliable.
Frequently Asked Questions
How do I know what size my truck wheels are?
Start by checking the markings on the existing wheel. A marking such as 8.25 × 22.5 identifies the nominal wheel width and diameter. Other specifications still need to be checked separately.
What does 8.25 × 22.5 mean?
It describes a wheel with a nominal width of 8.25 inches and nominal diameter of 22.5 inches.
How do I know if my truck wheel is 10/285 or 10/335?
The two specifications refer to different PCDs. Check the existing wheel specifications or accurately confirm the mounting pattern before ordering. Do not determine PCD from the number of studs alone.
Is wheel size enough to order a replacement truck rim?
Usually not. Wheels sharing the same width and diameter can have different PCDs, offsets, centre bores and other specifications.
What measurements should I send Mesh for a replacement wheel?
Provide the wheel size, PCD, centre bore, offset and mounting information where available, along with the truck details, axle position and any visible part numbers. Clear photographs can also help.
Can Mesh help identify a replacement truck wheel?
You can send Mesh the available wheel and vehicle details when making an enquiry. Providing clear specifications and photos will help narrow down the appropriate options.
Find the Right Replacement Truck Wheel at Mesh
Before buying a replacement truck wheel, collect as much information as possible from the existing wheel and vehicle.
Start with the wheel size, then confirm the PCD, centre bore, offset, mounting specifications, load requirements and axle application.
Mesh Wheels and Accessories offers 22.5-inch truck wheels across 8.25, 9.00 and 11.75-inch widths, with selected 10/285 and 10/335 configurations in steel and alloy.
Browse our truck wheel range or send us your wheel details for an enquiry.
