Wheel caps are not just a tuning element, but also a practical detail that protects the wheels from dirt, salt and minor mechanical damage. However, even such a simple process as installing them can raise questions among novice car owners. Incorrectly worn caps not only spoil the appearance, but can also fly off while driving, creating a danger on the road.
In this article we will look at all the nuances: from choosing caps by size to fixing them on different types of discs. You will learn what tools you will need, how to avoid common mistakes and what to do if the cap does not fit into place. And for a visual understanding of the process, we added step by step photos and useful video instructions.
If you've never done this before, don't worry - the process takes no more than 10-15 minutes on all four wheels. The main thing is to follow simple rules and take your time. Even experienced car owners sometimes encounter difficulties, for example, when the cap stubbornly refuses to sit on a stamped disk or dangles after installation. We will tell you how to solve these problems without contacting service.
We will pay special attention security: why you canβt drive on poorly secured hubcaps, how to check their fixation before driving, and what to do if the hubcap comes off on the highway. Weβll also look at myths - for example, is it true that hubcaps ruin wheel balancing or worsen brake cooling?
1. Selection of caps: sizes, materials and types of fastening
Before buying hubcaps you need to know exactly three key parameters: wheel diameter (in inches), number and location of mounting holes (PCD), and seat type (center hole and boss). This data is usually indicated in the technical documentation of the car or on the disc itself.
The most common materials for caps:
- πΉ Plastic - light, cheap, but fragile. Suitable for standard hubcaps of most budget cars (for example, Renault Logan or Lada Granta).
- πΉ Metal - strong, durable, often used in tuning. Weight can affect balance.
- πΉ Rubber - flexible, resistant to low temperatures. Popular for winter hats (eg Nokian Hakkapeliitta).
- πΉ ABS plastic - a compromise between strength and weight. Used in premium hubcaps (e.g. BBS or OZ Racing).
Based on the type of fastening, caps are divided into:
- π§ Clip-on β are fixed on the disk rim using plastic or metal latches. The most common type.
- π§ Bolted β fastened through holes for wheel bolts/nuts. Requires an exact PCD match.
- π§ Combined - combine clips and bolts for reliability (often in trucks).
Important! If you buy non-original caps, be sure to check the compatibility table. For example, caps from Volkswagen Polo may not fit Skoda Rapid, even if the wheel diameter is the same (14-15 inches), due to different PCD (4x100 vs 5x100).
If you buy used hubcaps, check them for cracks and deformations. Even a small crack can cause the cap to fly apart while driving.
2. Preparing for installation: tools and safety precautions
To install the caps you will need:
- π§ A set of heads or a wrench for wheel bolts (if the caps are bolted).
- π§΄ Silicone grease or soap solution (to make putting it on easier).
- π§² Magnet or screwdriver (so as not to lose the clips).
- π Tape measure or ruler (to check alignment).
- π Jack and stops (if the wheel is removed).
Safety precautions before installation:
- Park the car on a level surface and secure it with the handbrake.
- If you jack up the car, use wheel chocks under the opposite wheels.
- Do not install hubcaps on hot discs - the plastic may become deformed.
- Check that there are no sharp burrs on the rim that could damage the cap.
If the caps are bolt-on, before installation, clean the threads of the wheel bolts from dirt and lubricate them graphite lubricant - this will prevent sticking and make future replacement easier.
Critical error: Never use WD-40 or other penetrating lubricants on clips or bolts. They corrode plastic and rubber, which leads to weakening of the fastening.
What to do if the cap does not fit on the disk?
If the cap stubbornly does not fit, check:
1. Matching diameter (for example, a 15" cap will not fit on a 16" disc).
2. The presence of burrs on the rim - they need to be cleaned with sandpaper.
3. Hardness of the material - some plastic caps require heat (eg with a hairdryer) to soften.
4. Alignment - try putting the cap on at an angle and then straightening it out.
3. Step-by-step instructions: how to put on clip-on hoods
Clip-on hoods are the most common type, so let's start with those. The whole process takes no more than 5 minutes per wheel.
Step 1: Preparing the Wheel
Clean the rim of the disc from dirt, snow or ice. If there is rust on the disc, remove it with a wire brush. Check that there are no dents or deformations on the rim - these could prevent a tight fit.
Step 2: Checking the Clips
Inspect the clips on the cap - they should be intact and elastic. If the clips are bent, carefully straighten them with pliers. In some hubcaps, the clips are removable and can be replaced separately.
Step 3. Putting on the cap
Grasp the hubcap with both hands on opposite edges and align it with the wheel. Start putting it on from the top point, gradually pressing the cap in a circle. If it doesn't seat, tap the edge lightly with the palm of your hand or a rubber mallet.
Step 4. Fixing the clips
Once the cap is in place, press it around the perimeter until the clips click into place. You should hear characteristic clicks. Check that the cap is not loose and sits symmetrically.
βοΈ Checking the correct installation of the clip cap
If the cap is still loose, try the following:
- π§ Use additional clips (sold separately in auto stores).
- π§ Apply a thin layer sealant on the rim for better grip.
- π§ Install rubber gaskets between the cap and the disc.
If the cap does not stay in place despite all efforts, it is most likely the wrong size or disc type. Do not try to βpressβ it with force - this will lead to breakage of the clips.
4. Installation of bolted caps: nuances and errors
Bolt caps are attached through the wheel bolt/nut holes. They are more reliable than clip-on ones, but require an exact match of the PCD (hole pattern).
Step 1: Aligning the Holes
Place the cap on the disc and line up the bolt holes. If they don't match, check the PCD of your wheel and hubcap. For example, 4Γ98 (like VAZ 2108-2115) and 4Γ100 (like Ford Focus) are visually similar, but not interchangeable.
Step 2: Tighten the bolts
Insert the bolts into the holes and tighten them criss-crossso that the cap sits evenly. Do not tighten the bolts all the way right away - first make sure that the cap sits symmetrically.
Step 3: Final tightening
After preliminary fixation, tighten the bolts firmly 10-15 Nm (use a torque wrench). Over-tightening may damage the threads or deform the cap.
Typical mistakes when installing bolted caps:
β οΈ Attention! If you are using flare head bolts, make sure they are compatible with the holes in the cap. Some caps require flat washer bolts.
| Error | Consequences | How to avoid |
|---|---|---|
| PCD mismatch | The cap will not fit or will be skewed | Check the PCD of the disc and cap before purchasing |
| Using the wrong bolts | Breaks threads or damages cap | Use the bolts supplied with the cap |
| Uneven tightening | The cap is deformed or cracked | Tighten the bolts crosswise |
| No washers | The bolts will wear through the plastic of the cap | Always use the washers included |
5. Problems and solutions: what to do if the cap does not fit
Even if you did everything correctly, sometimes the hubcaps refuse to sit in place. Let's look at the most common problems and ways to solve them.
Problem 1: The cap is too tight
If the cap does not fit even though the sizes match, try:
- πΉ Heat the cap with a hairdryer (temperature 50-60Β°C) - the plastic will become more elastic.
- πΉ Lubricate the edge of the rim with soap solution or silicone grease.
- πΉ Gently bend the clips with pliers (do not overdo it!).
Problem 2: The cap is loose
Causes and solutions:
- πΉ Weak clips - replace them with harder ones or add additional ones.
- πΉ Wrong diameter - a smaller cap (for example, 14" instead of 15") will dangle.
- πΉ Warped rim - Align the disc at a tire shop.
Problem 3: The cap cracks during installation
This happens due to:
- πΉ Excessive effort when putting on.
- πΉ Low quality plastic (especially for cheap caps).
- πΉ Temperature changes (for example, if the cap was stored in the cold).
Solution: Before installation, warm up the hood in a warm room for 10-15 minutes.
β οΈ Attention! If the cap is cracked, do not use it any further - even a small crack can cause it to fly apart while driving and damage other cars.
6. Caring for hubcaps: how to extend their service life
To make your caps last longer, follow these simple rules:
- πΏ Wash your hubcaps soft sponge with car shampoo. Do not use brushes with hard bristles - they will scratch the surface.
- π§΄ To shine plastic caps, use special polishes (for example, Sonax Plastic Care).
- βοΈ In hot weather, avoid parking in direct sunlight - the plastic may become deformed.
- βοΈ In winter, clear the caps of snow and ice plastic scraperso as not to damage the coating.
If the caps are metal:
- π§ Check the mounting bolts once a month - they may become loose due to vibration.
- π If rust appears, treat problem areas
rust converterand paint it.
To store hubcaps (for example, when changing tires seasonally), use soft cases or boxes with foam inserts. Do not stack them as this may warp the edges.
What not to do:
- π« Wash the caps under high pressure (clips may be damaged).
- π« Use abrasive cleaning products.
- π« Paint hubcaps without preliminary primer.
7. Myths and truth about wheel covers
There are many myths associated with hubcaps. Let's look at the most popular ones:
Myth 1: Wheel caps ruin wheel balance.
β Truth: High-quality hubcaps, evenly distributed along the rim, do not affect the balancing. However, if the cap is heavy (for example, metal) or installed crookedly, imbalance is possible. In this case, it is enough to rebalance the wheel with the hubcap.
Myth 2: Hubcaps reduce brake cooling
β Truth: Closed hoods can indeed reduce heat dissipation, but this is only relevant for sporty driving. In city mode, the temperature difference between brake discs with and without a cap is minimal.
Myth 3: Wheel covers protect wheels from corrosion
β Truth: The caps only protect front part disk. The inside and mounting holes still rust, especially in winter. For complete protection, disk processing is required anticorrosive or liquid plastic.
Myth 4: Hubcaps can be installed on any rims
β Truth: The caps are designed for stamped or simple alloy wheels without difficult terrain. For discs with deep grooves (for example, BBS CH) the caps will not fit.
Myth 5: Hubcaps reduce wheel noise
β Truth: Plastic hubcaps do reduce tire noise a bit, especially at high speeds. However, the effect is minimal compared to special soundproofing pads.
FAQ: Answers to frequently asked questions
Is it possible to drive without one hubcap if it comes off?
Short-term - possible, but not advisable. Missing a hubcap on one wheel creates an imbalance in appearance and can lead to corrosion of the unprotected wheel. If the cap comes off on the highway, it is better to stop and fix it or remove the remaining caps for symmetry.
How to remove the cap if it is stuck to the disk?
If the cap cannot be removed due to corrosion or sticking:
- Process the joint between the cap and the disc
WD-40orliquid key. - Use a flat-head screwdriver to pry the cap off from different sides.
- Tap the cap with a rubber mallet.
- If the clips are broken, carefully cut off the cap with a hacksaw.
Do hubcaps affect fuel consumption?
Theoretically, caps can slightly increase aerodynamic drag, but in practice their effect on fuel consumption is minimal (no more than 0.1-0.3 l/100 km). Tire pressure and driving style have a much greater influence on consumption.
Can the hubcaps be painted a different color?
Yes, but you need to properly prepare the surface:
- Clean the cap from dirt and degrease
white spirit. - Fill cracks and uneven areas.
- Apply plastic primer.
- Paint the hubcap with spray paint (eg Motip or Kudo).
- Apply varnish to protect against chipping.
For metal caps, use metal paint with anti-corrosion properties.
Which caps are better: plastic or metal?
The choice depends on your priorities:
| Criterion | Plastic caps | Metal caps |
|---|---|---|
| Strength | Low (crack on impact) | High (resistant to mechanical damage) |
| Weight | Light (does not affect balance) | Heavy (may require rebalancing) |
| Cost | Cheap (from 500 rubles per set) | Expensive (from RUB 3,000 per set) |
| Care | Simple (wash with water) | Complex (needs corrosion protection) |
For urban use, plastic caps are optimal; for off-road or tuning, metal caps are optimal.