How to True a Wheel (Basic Spoke Tension and Wobble Fixes)

Learn the fundamentals of wheel truing: how spoke tension moves the rim, how to fix side-to-side wobbles and up-and-down hops, and how to keep the wheel centered (dished) so it stays true.

(TL;DR)

• True the wheel in small increments (often 1/8-1/4 turn at a time) and check frequently.
• Lateral wobble (side-to-side) is fixed by tightening spokes on the side the rim needs to move toward (opposite the rub/indicator). (parktool.com)
• Radial issues (hops/roundness) are fixed by tightening to pull down high spots and loosening to let low spots rise; expect some lateral change and correct back and forth. (parktool.com)
• Don’t ignore dish/centering; correct it by adjusting all spokes on one side evenly. (parktool.com)
• If the rim is bent/deformed, spoke adjustments may at best make it “better” but not “perfect”—know when to stop and replace parts. (parktool.com)

What “truing a wheel” means (and what it doesn’t)

Simply put, wheel truing is adjusting spoke tension to make the rim as true as possible to the plane formed by the wheel spindle; it should “run straight.” In practice, true means:

Lateral true: side-to-side wobble (culprit: typically spokes on the opposite side of the rim rub (or is indicated) by touching something).

Radial true: is done by removing hops, or waves that make it up-and-down round instead of round, around the center (or hub spindle).

Remember dish/centering? If the rim is forced over to one side (even that “+/- 1-2 mm” may become more like -5 mm).

Spoke tension, not just tight, but tensioned consistently, as a set (parktool.com).

Safety note: If you see crack along the sidewall, a spoke that’s pulled through the rim hole, several broken spokes, or an extreme dent, don’t keep “running the spoke wrench to it,” have a qualified bike mechanic look at it and likely replace the rim and/or wheel (parktool.com).

Tools you need (and what’s optional)

Correct-size spoke wrench ([the most important of all things] in this game).

• A way to hold the wheel while it spins: truing stand ideally, but bike frame/fork are fine for basic fixes. (parktool.com)
• Indicators to “read” the wobble: calipers on the stand, or a zip tie/tape pointer on the frame (and good, simple for beginners to set up).
• Light source and a marker (to mark where it’s worst).
• Optional and good—spoke tension meter (tensiometer) to verify tension, especially if you are new, or this wheel is expensive. (parktool.com)
• Optional—a dishing tool for checking that it’s centered more accurately than eyeballing it. (parktool.com)

Before you touch a spoke: 5 fast checks that avoid wasted time

1. Wheel is seated totally: Is axle in dropouts or thru axle interface fully engaged? An axle that is slightly crooked in the frame will make the wheel appear out of true.

2. Disc brakes? Isolating rotor rub vs rim wobble: Spin the wheel and check the rim vs the frame, then watch the rotor vs the caliper. A bent rotor can mask as a wheel issue.

3. Tire not seated (don’t chase the tire): If the tire is not seated evenly on the rim bead, that makes it look like the tire hops even though the rim is okay. to do accurate truing, it’s often easiest to true without tire (especially for radial checking).

4. Spoke is obviously problematic: Is there a broken spoke, or nipple backed way out? Is there corrosion? Won’t turn?

   Look for rim damage: If there’s a sharp kink/dent, spoke tension changes have limits. If the rim metal is deformed, you may not be able to get it adequately straight. (parktool.com)

Spoke and nipple basics (so you turn the right thing the right way)

A spoke nipple is like a tiny nut that climbs up or down the spoke threads. The tricky part is perspective: you’re usually turning the nipple from the rim side, and it’s easy to get “left/right” confused.

Beginner habit that helps: before making any real correction, pick one nipple and do this test:

Turn it a small amount (like 1/8 turn) and confirm the spoke gets tighter (higher tension) or looser.

If you’re not sure, stop and re-check—forcing nipples the wrong way is how rounded nipples and snapped spokes happen.

Step-by-step: fix a side-to-side wobble (lateral truing)

Lateral truing corrects side-to-side deviations. A proven workflow is: locate the deviation, isolate the spokes that control that section of rim, and make small tension changes to reduce it. (parktool.com)

Set up your indicator: Bring the caliper/zip tie close to the rim sidewall (not touching). Spin the wheel and move it inward until it just starts to lightly touch at the worst wobble. (parktool.com)

Stop at the worst point and mark it: Use a marker on the rim or a piece of tape to indicate where you need to return if you lose your place.

Pick the key spoke(s): If you’re seeing the rim rubbing on the left indicator at the worst point, you’ll want to try to tighten that rim toward the right. Pick a spoke suggested in that zone (spokes that emerge from the right hub flange). (parktool.com)

Make a small adjustment: A good general guideline is 1/4 turn at a time (and maybe 1/8 turn for smaller errors). Re-check after each adjustment. (parktool.com)

Spread the correction if you need to: If the wobble is multiple spokes wide, make smaller changes spread across 2–4 spokes, rather than a huge change on one nipple.

Alternate sides as you improve it: Fix a few large deviations on one side, then switch and fix the other. This helps keep the wheel reasonably centric as you work. (parktool.com)

Know what “good enough” looks like: Park Tool suggests a general standard of perhaps about 0.5 mm lateral deviation (about the thickness of ~5 sheets of printer paper). (parktool.com)

A useful mental model: how tightening the spokes changes the rim

You can think of the spokes as a team, and when you make one stronger, that spoke pulls more at the rim in the area near that nipple. The nearby spokes help carry the load too, which is why wheel truing is a matter of many small corrections… not giant turns.

Step by step: fix an up-and-down hop (radial truing)

The radial here refers to roundness.

You’ll see two common patterns:

High spot: rim moves away from hub (a “hump”)

Low spot: rim moves toward hub (a “dip”)

Radial corrections often affect lateral trueness too, so expect to bounce between radial and lateral checks. (parktool.com)

Move your indicator to read radial movement. Place it under the rim (you can also place a pointer fixed below the rim). Now spin and find the biggest hop. (parktool.com)

Reduce high spots first (common approach!). You’ll typically tighten the spokes in the high-spot zone to pull the rim closer to the hub. You’ll often do this with a pair of spokes to avoid creating a new lateral pull. (parktool.com)

Re-check (and don’t over-correct!). After each tiny adjustment, re-spin the wheel to find the new worst spot. In general, wheels seem to have a way of improving, slowly, instead of all at once, big move it and end up going “out” again.

Handle low spots carefully: If the rim moves toward the hub, this is often a simple matter of making some spokes a little looser on that side of the wheel (you’re letting the rim move away from the hub vertically now). (parktool.com)

Use a realistic target: One generalized rule of thumb is 1 mm radial deviation, or less—that’s ~10 sheets of printer paper. Oftentimes, tires themselves vary more than that. (parktool.com).

To reiterate, every few corrections, bump back to lateral true; it’s typical to create new side-to-side errors while chasing roundness. (parktool.com).

Step-by-step: center the rim (dish/centering)

A wheel can be “true” but still not centered over the hub (out of dish). Dish is corrected by changing the tension of all spokes on one side relative to the other: tightening left pulls it left; tightening right pulls it right (and loosening does the opposite). (parktool.com)

1. Check dish: Best method is a dishing tool. Another method is to flip the wheel in a truing stand and see if the rim’s position relative to your indicators changes (a clue the dish is off). (parktool.com)

2. Decide direction: If the rim needs to move right, you’ll adjust right-side vs. left-side tension accordingly (often by tightening one side or loosening the other, depending on current overall tension). (parktool.com)

3. Adjust evenly around the wheel: Use the valve hole as reference and make as much of the same small adjustment on each nipple on the side you’re changing (for example, 1/4 turn each). (parktool.com)

4. Re-check lateral true after a dish pass: Dish changes can introduce or reveal lateral deviations. (parktool.com)

5. Aim for small error: Park Tool’s example process aims for about a 1 mm or less gap when checking dish. (parktool.com)

Why right/left spoke tension won’t match (and that’s OK)

On many wheels (like rear wheels with a cassette, or disc-brake fronts), the hub flanges aren’t symmetric. That means correct dish often requires different average tension on each side. That’s normal—what you’re chasing is proper centering plus consistent tension within each side.

(parktool.com)

Spoke tension basics: make it consistent (not just “tight”)

A wheel with wildly uneven tension may true up in the stand but won’t stay true for long. Spoke tension is best measured with a tensiometer, and it’s commonly specified in kgf or N depending on brand/tooling. (parktool.com)

• Consider relative tension first: Especially for very basic truing, you’re aiming to make spokes on the same side of the wheel read in a similar range (or feel similarly if you’re metric, and don’t own a meter) (parktool.com)
• Avoid “too low” overall tension: Low tension can allow spokes to gradually loosen up and/or lead to repeat-truing; the manufacturers of tension tools note there’s not one single “universal” number across brands, because it depends on rim/spokes/build. (manuals.plus)
• Avoid “too high” overall tension: If you over-tension spokes too high you risk rim damage and nipple failure. When in doubt lookup your rim manufacturer’s specification for maximum allowed. These can vary by model!

How to prevent spoke wind-up (aka the common beginner problem)

As tension increases, a nipple can sometimes twist the spoke in a way known as wind-up, before the sections of thread are fully moved. If you leave the spokes twisted, the twist can “unwind” during riding, resulting in the wheel being out of true. One classic technique is to purposely over-shoot your turn slightly, and then back off a touch, to get tend to release the twist. (sheldonbrown.com)

Stress-relieve (de-stress) and then check so it stays true

After trueing/tensioning, it is normal (and wise) to stress-relieve the wheel to assist positioned spoke elbows at the
hub, and nipples at the rim.A common practice is squeezing pairs of parallel spokes firmly and then checking the wheel for trueness and even tension, and repeating if necessary. (parktool.com)

1. Squeeze pairs of parallel spokes on both sides of the wheel moving all the way around.
2. Re-check for lateral and radial trueness.
3. Re-check for dish, if you’ve applied dish corrections.
4. Carry out final micro corrections of often just 1/8 of a turn.
5. Squeeze and re-check once more if the wheel has visibly changed at all.

When to stop

How do you know when to stop truing (and to “read” that the wheel is telling you it needs more than a light truing)? Nipples are getting rounded off, spokes are definitely going slack in one spot while the other side teeters on super-tight. And there’s an observable kink/ding in the section of rim that’s not responding to normal truing. The impact of deformation in the rim metal may mean that gremlins in the truing would leave the wheel worthless. There’s no fixing that rim—replacing it is the only answer. (parktool.com) Keep breaking spokes, or repeating a re-true too often, and a rebuild could be the road to peace instead of another touch up.

Common mistakes (and how to avoid them)

• Big turns: It should be rare that you need to turn more than 1/2 a turn. Once you are, slow down. Small corrections are easier to control. (parktool.com)
• Tightening (or loosening) only: Sometimes, both strategies, but do it intentionally and recheck dish and overall tension.
• Ignoring dish: You can “chase wobble” and inadvertently make a rim that is out of round but not out of dish. Check the dish of the wheel regularly. (parktool.com)
• Leaving spokes twisted: If you have not been checking, it is a good ideal to feel for wind-up in the spoke, and to find the overshoot/backoff technique. (sheldonbrown.com)
• Truing the tire instead of the rim: Check the rim itself; tire is “wobbling” may well just be the tire not seating properly.
• Using the wrong sized spoke wrench: This will do bad things to your nipples incredibly quickly. Finger check the fit before you start twisting.

References

1. Park Tool: Wheel Truing (Lateral & Radial) — https://www.parktool.com/blog/repair-help/wheel-and-rim-truing
2. Park Tool: How Wheel Truing Works — https://www.parktool.com/en-int/blog/repair-help/how-wheel-truing-works
3. Park Tool: Wheel Dishing (Centering) — https://www.parktool.com/en-int/blog/repair-help/wheel-dishing-centering
4. Park Tool: Spoke Tension Measurement and Adjustment — https://www.parktool.com/en-us/blog/repair-help/wheel-tension-measurement
5. Sheldon Brown: Wheelbuilding (Tensioning and Truing; Spoke Torsion) — https://sheldonbrown.com/wheelbuild.html
6. DT Swiss: Tensiometer User