The job
A gauge for the rim-to-hub relationship, with sliding blocks that allow the tire to remain mounted.
Park Tool · Wheel dishing gauge
Park Tool WAG-4 Wheel Dishing Gauge
A gauge for the rim-to-hub relationship, with sliding blocks that allow the tire to remain mounted.
$68.95Nov 7, 26, 12:57 AM · New York
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- Measured relationship Rim centering relative to hub locknuts: dish
- Maker rim scope 16–29 in tire fit / ETRTO305–630
- Hub width Maker states any hub width for described use
Measured relationship
Rim centering relative to hub locknuts: dish
Identify the measurement
Dish, rim runout and spoke tension are separate checks. Select the instrument for the relationship you need.
What this choice changes
Check rim centering separately from wheel runout
The WAG-4 checks wheel dish: whether the rim is centred relative to the hub’s locknut contacts. This is different from watching a rim move sideways in a truing stand, and different again from reading spoke tension. It is useful alongside a stand because a wheel can need more than one type of measurement during a build.
Park Tool specifies rims fitting 16–29-inch tires, also identified as ETRTO/ISO305–630, and states compatibility with any hub width within the described use. Sliding spacer blocks offset the contact so the tire can remain on the wheel. That feature matters when you want the independent centering check without first removing a mounted tire.
Choose this gauge when rim-to-hub centering is the question you need to answer. It supplies neither a wheel-support stand nor the wrench that changes nipple position. Pair it with the actual adjustment tool and measurement equipment required for the wheel, rather than expecting one gauge to complete the build.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Measured relationship | Rim centering relative to hub locknuts: dish |
| Maker rim scope | 16–29 in tire fit / ETRTO305–630 |
| Hub width | Maker states any hub width for described use |
| Contact arrangement | Sliding spacer blocks |
| Mounted-tire use | Supported by the offset-block design |
| Supplied | One dishing gauge |
Choose for your actual setup
Identify the measurement
Dish, rim runout and spoke tension are separate checks. Select the instrument for the relationship you need.
Consider the mounted tire
The sliding blocks make the stated tire-on check a useful convenience, not a larger wheel-diameter guarantee.
Fit checks & limits
- No numerical centering tolerance or calibrated accuracy is established.
- No stand, spoke wrench or bicycle parts are included by the generic wheelbuilding category label.
Questions before you choose
Why use it if I already have a truing stand?
It independently checks rim-to-hub centering. A stand’s runout reference is a different relationship.
Must I remove the tire?
The maker describes sliding spacer blocks that allow the gauge to be used with the tire mounted, within the stated scope.
Does it measure spoke tension?
No. A tension meter supplies that separate measurement and requires the correct conversion data.
Guides for this choice
Other equipment to consider
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B000651134.