To install wheel balancing weights, the wheel is first spun on a balancing machine, which shows where weight is needed and how many grams. The rim is cleaned at that position, the correct weight — clip-on for a flange rim, adhesive for the inside of an alloy rim — is fitted there, and the wheel is spun again to confirm the balance reads zero. Removal is the reverse job done with the right tools, so the old weight comes off without damaging the rim or the flange.
Everything below follows the order a technician actually works in: remove, measure, prepare, fit, confirm.
Before you start: tools and where the weights go
You need a balancing machine, a wheel weight removal tool, a fitting hammer for clip-on weights, cleaning materials for the rim surface, and a stock of weights in the profiles, types and gram sizes the work calls for.
Two questions from readers belong here, because they decide the work before it starts.
Where do wheel balancing weights go? On the rim of the wheel, at the position the balancing machine indicates. Clip-on weights go on the rim flange — the outer edge, the inner edge, or both. Adhesive weights go on the flat surface inside the rim. A wheel is often corrected in two planes, so it can carry one weight towards the inside and one towards the outside of the rim.
What do wheel balancing weights look like? A clip-on weight is a small curved grey metal piece, about the length of a thumb, with a steel clip on its back and its gram value stamped on it — for example, Cosmo’s steel clip-on is stamped “Fe 60g”. An adhesive weight is a flat strip of small grey segments with tape on the back, each segment usually 5 grams. Both appear in the photos on the products page.
Step 1: Remove the old weights
Start every balance with a bare rim. Old weights left in place make the machine’s reading meaningless.
For clip-on weights, grip the weight with the removal tool and lever the clip off the flange progressively, controlling the release. Do not prise against the rim face — that is what scratches wheels. For adhesive weights, lift the strip with a plastic scraper or removal tool, then remove the remaining tape and adhesive residue from the rim surface. Residue left behind is the surface the new weight would have to bond to.
Inspect what comes off. A sprung clip, a bent body or a strip that peeled too easily is information about why the wheel may have lost its balance — and removed adhesive weights are never refitted. If weights are missing entirely and only their marks remain, read the guide to why wheel balancing weights fall off before fitting new ones the same way.
Step 2: Measure on the balancing machine
Mount the tyre and wheel assembly on the machine, enter or set the wheel dimensions the machine asks for, and spin. The machine reports the imbalance in grams for the inner and outer planes, and shows the angular position for each correction — usually the topmost point when the wheel is turned to the indicated position.
Mark both positions before fitting anything. If the machine asks for a very large correction, stop and inspect: check the tyre is seated evenly on the rim, look for rim damage or a tyre fault. Large readings are a symptom, and no installation technique fixes them with more weight.
Step 3: Prepare the rim
For a clip-on position, the flange has to be clean and sound. Brush off dirt and loose corrosion so the clip can close on metal, not on scale.
For an adhesive position, preparation decides the whole job. Clean the marked area inside the rim until no brake dust, grease, fitting lubricant or old adhesive remains, and dry it completely. The wheel should be at normal working temperature — not freshly washed and cold. This stage takes a minute and prevents most of the failures described in the adhesive weights guide.
Step 4: Install the weights
Clip-on weights. Select by profile first, grams second — the profile must match the flange. Hook the clip over the flange at the marked position, body flat against the rim, and tap it home with the fitting hammer so the clip seats fully. Check by hand for rock or sideways slide. The full clip-on method is in the clip-on wheel balancing weights guide.
Adhesive weights. Cut or separate the strip to the gram value needed. Peel the liner without touching the tape face, place the strip at the marked position inside the rim, and press firmly along its full length, end to end. Where the wheel runs close to the brake caliper, use a low-profile weight and check the clearance.
Fit the inner-plane correction and the outer-plane correction as the machine directs. Do not move a weight to a more convenient or less visible position — position is the measurement.
Step 5: Confirm with a second spin
Spin the wheel again. The machine should read zero, or within its accepted tolerance, in both planes. If it shows a small remainder, adjust: reposition a clip-on weight slightly, or change an adhesive strip for the corrected value, then spin once more.
Only after the confirmation spin is the job done. A wheel that leaves the machine without it has been fitted, not balanced. As a last check, look at the fitted weights once more: clips fully closed, strips fully pressed, nothing where it can foul the caliper or suspension.
When should this be done?
Balancing is part of tyre work, not a separate luxury. Continental’s guide to balancing tyres gives the working list: when new tyres are fitted, when a tyre is repaired and refitted, when tyres are rotated, after a hard pothole strike, and as routine maintenance after every 5,000 to 10,000 km or one to two years. At each of these, the old weights come off and new ones go on by the steps above.
Mistakes in installation and removal
Leaving old weights on and “adding a little”. The machine can only measure honestly from a bare rim.
Levering clip-on weights off against the rim face. The tool works on the clip, not against the wheel’s finish.
Skipping surface preparation for adhesive weights. Every shortcut here is paid for with a weight that falls off.
Refitting removed weights. Sprung clips and used tape are the two most common causes of repeat imbalance.
Fitting by grams alone. Profile for clip-on weights, form and position for adhesive weights — grams are only one part of the specification.
Moving a weight to hide it. The machine chose the position. Convenience is not a correction.
Not doing the confirmation spin. It is the only stage that proves the other four worked.
Frequently asked questions
How are wheel balancing weights attached?
Clip-on weights are attached mechanically — a steel clip on the back of the weight hooks over the rim flange and is tapped into place with a fitting hammer. Adhesive weights are attached by the tape on their back, pressed onto the cleaned, dry surface inside the rim. In both cases the position and gram value come from the balancing machine.
How do you remove wheel balancing weights?
Clip-on weights are removed with a wheel weight tool that grips the weight and levers the clip off the flange in a controlled way. Adhesive weights are lifted off with a scraper or removal tool, and any tape residue is cleaned from the rim. Removed adhesive weights are thrown away; removed clip-on weights are inspected and reused only if the clip and body are undamaged.
Where do wheel balancing weights go on the wheel?
On the rim, at the position the balancing machine shows. Clip-on weights sit on the rim flange — outer, inner or both. Adhesive weights sit on the surface inside the rim. Because a wheel is corrected in two planes, it commonly carries one weight towards the inside and one towards the outside.
Can I install wheel balancing weights at home without a machine?
Not accurately. The machine is what measures the grams and the position — without it, fitting weights is guesswork, and a guessed weight in the wrong place can make a wheel worse. What an owner can do at home is check that fitted weights are still in place and return to a workshop if a vibration appears.
What do wheel balancing weights look like?
A clip-on weight is a small curved metal piece with a clip on the back and its gram value stamped on the face — Cosmo’s steel version reads “Fe” with the grams, such as 60g. An adhesive weight is a flat strip of small metal segments with adhesive tape on the back, each segment usually marked with its gram value.
Do you remove old weights before balancing?
Yes, always. Balancing starts from a bare rim so the machine measures the tyre and wheel assembly itself. Old weights are removed first, the rim is cleaned, and new weights are fitted to the machine’s reading.
How long does it take to install wheel balancing weights?
The fitting itself takes a few minutes per wheel once the wheel is on the machine: a spin to measure, fitting in one or both planes, and a confirmation spin. Most of the total time at a workshop is removing and refitting the wheels on the vehicle, not the weights themselves. (The background to the whole process is in wheel balancing weights explained and the types guide.)
Weights and supply for installers
A workshop’s installation quality starts with its stock: correct clip profiles, fresh adhesive strips, and gram sizes that match the work. Cosmo India supplies clip-on weights from 5 to 100 grams and adhesive weights as pieces, strips and rolls, in steel, lead and zinc — details on the products page, enquiries to info@cosmo.co.in.
