Ethan Clarke
Painting plastic wheel trims can be a cost-effective way to improve the look of your car. While some opt to buy new trims, others have chosen to paint their trims to match the rest of their car. The process involves a lot of preparation, including sanding, de-greasing, and surface cleaning, as well as applying primer and sealant. The paint can be applied by brush or spray, with some people opting for a professional respray.
Characteristics and Values Table for Painting Plastic Wheel Trims
| Characteristics | Values |
|---|---|
| Cost | Varies; paint costs around £6.79 or $20, and other materials are needed |
| Method | Spray paint, brush paint, or heat gun |
| Paint Type | Car paint, acrylic paint, or plastic headlight sealer |
| Primer | Use a plastic primer first, or a standard primer |
| Degreaser | Isopropanol or 'gunk' engine cleaner |
| Sanding | Sand to knock down the texture |
| Clean | Hot soapy water |
| Top Coat | Clear top coat |
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What You'll Learn
Choosing the right paint
Type of Paint
The type of paint you choose is essential for ensuring the paint adheres well to the plastic surface and withstands the elements. Opt for paints specifically designed for plastic surfaces, such as acrylic or enamel paints. These paints are formulated to bond with plastic and provide a long-lasting finish. Some paint manufacturers offer wheel trim paint, which can be a good option, but your colour choices may be limited.
Colour
Consider the colour of the paint you wish to apply. If you're matching it to the body of your car, ensure you select a shade that complements the existing colour palette. Keep in mind that certain colours, like silver, may look better in a car body paint finish rather than a dedicated wheel paint, which can sometimes appear garish.
Application Method
The method of application can influence your paint choice. Spray paints are often recommended for plastic wheel trims as they provide a smoother and more even finish than brushes. Spray paints are also more accessible to use and can give a professional-looking result. However, if you choose to brush on the paint, ensure you brush in the right directions (along the spokes and around the circumference) to achieve the best finish.
Durability
Select a paint known for its durability and resistance to chipping and flaking. Clear coat or sealant applied over the paint can also enhance its durability and provide a protective layer. Additionally, consider using an adhesion promoter or primer specifically designed for plastic surfaces to improve paint adhesion and longevity.
Environmental Considerations
If you're concerned about the mess, smell, and environmental impact of the painting process, opt for water-based paints or eco-friendly alternatives. These options typically have lower volatile organic compound (VOC) emissions, reducing their environmental footprint.
Cost
Finally, consider your budget when choosing the right paint. The cost of paint can vary, and you may need multiple coats or additional materials like primers and sealants, so factor these into your overall expense calculation.
Remember, taking the time to select the appropriate paint for your plastic wheel trims will pay off in the long run, resulting in a more satisfactory and long-lasting finish.
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Cleaning the trims
To paint your plastic wheel trims, you must first clean them thoroughly. This step is crucial as it ensures the paint adheres properly to the surface and prevents flaking. Here is a detailed guide on cleaning your trims before painting:
Removing the Trims:
Start by removing the wheel trims from your vehicle. This step is optional, but it will make the cleaning and painting process easier and help you achieve more precise results. To remove the trims, you may need to remove the lug nuts and take off the hubcaps or wheel covers. Check your vehicle's owner's manual for specific instructions.
Degreasing:
The trims' surface must be free of grease and grime. Use a degreaser or a plastic-safe cleaner to remove any oily residue. You can find dedicated plastic cleaners or degreasers at auto parts stores or online. Alternatively, you can use isopropyl alcohol (rubbing alcohol) or 'gunk' engine cleaner to degrease the trims. Ensure you follow the manufacturer's instructions and safety guidelines when using these products.
Sanding and Smoothing:
Lightly sand the trims to create a smooth base for the paint to adhere to. Use fine-grit sandpaper (around 320-grit) and sand in a consistent direction. This process will help remove any minor scratches, scuffs, or texture on the plastic. After sanding, wipe away any dust or debris with a damp cloth.
Final Cleaning:
Once the trims are sanded and smooth, give them a final clean to ensure all dust and residue are removed. You can use hot soapy water for this step, ensuring you rinse and dry the trims thoroughly afterward. This step will ensure that no dirt or grease remains, providing a clean surface for the paint to adhere to.
Additional Preparation:
Before painting, you may also want to apply an adhesion promoter or a plastic primer to the trims. This step will further enhance the adhesion of the paint and help create a more durable finish. Ensure the primer is suitable for use on plastic surfaces.
Now that your wheel trims are clean and prepared, you can move on to the painting process. Remember to work in a well-ventilated area and follow all safety guidelines when using paints and chemicals.
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Sanding and surface prep
Start by removing the wheel trims from your vehicle. This is important as it allows you to work on them more easily and effectively. Once removed, clean the trims thoroughly with a degreaser or a solution of hot soapy water. This step is crucial as it removes any grease, dirt, or road grime that may interfere with the painting process and affect the adhesion of the paint. Allow the trims to dry completely before moving on to the next step.
Next, use sandpaper or wet and dry paper to sand the surface of the trims. This process helps to create a rough surface, which will allow the paint to adhere better. Sanding also helps to remove any existing paint, rust, or imperfections on the trims, creating a smooth base for the new paint. It is recommended to use fine-grit sandpaper and apply light pressure when sanding to avoid damaging the plastic surface.
After sanding, it is essential to remove any dust or debris generated during the process. Use a clean, dry cloth to wipe down the surface of the trims, ensuring no residue remains. You can also use compressed air or a vacuum to ensure all dust particles are eliminated.
Once the trims are clean and sanded, it is crucial to apply a primer. Primer helps the paint adhere better to the plastic surface and can improve the durability of the paint job. Choose a primer specifically designed for plastic surfaces, as this will ensure better adhesion and a longer-lasting finish. Apply the primer evenly and allow it to dry completely before moving on to the next step.
Finally, once the primer is dry, you may need to sand the surface again lightly with fine-grit sandpaper. This step, known as "scuff sanding," helps create an even smoother surface for the paint to adhere to. It also helps to remove any minor imperfections or brush strokes that may have occurred during the priming process.
By following these steps for sanding and surface preparation, you will create a solid foundation for your paint job, ensuring a smoother and more durable finish on your plastic wheel trims.
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Applying primer
To apply primer to your plastic wheel trims, you will first need to clean the trims to remove any dirt, dust, or grease. Isopropanol or another type of rubbing alcohol is recommended for this step. This is an important step to ensure that the paint will adhere properly to the trims and will not flake off within a few months.
Once the trims are clean and dry, you can begin applying the primer. It is recommended to use a plastic primer specifically, as this will ensure the paint adheres properly and does not crack or flake off. You can use a standard primer, but there is a risk of the paint not adhering as well over time.
When applying the primer, it is best to use a spray rather than a brush to achieve a smooth and even finish. Be sure to follow the directions on the primer product you have chosen and apply in a well-ventilated area or outdoors.
After priming, you may need to lightly sand the trims with fine-grit sandpaper to ensure a smooth finish before applying the paint. This will help create a key for the paint to adhere to and result in a more durable finish.
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Spraying or brushing
Once you have gathered your supplies, the first step is to remove the trims from your vehicle. Clean them thoroughly with soap and water to remove any dirt, dust, or grease. This step is crucial, as it ensures the paint will adhere properly and not flake off later. You can also use a wax and grease remover for this step. Next, dry the trims completely, using compressed air or a leaf blower to reach any small cracks or crevices.
If your trims have any rust, use sandpaper to remove it. For light rust, you can use fine-grit sandpaper, but for heavier rust, you may need to start with a lower grit and work your way up to a finer grit to achieve a smooth finish. If there are any high ridges, sand them down until they are level with the rest of the trim. After sanding, be sure to remove any dust generated during the process.
Now you are ready to begin painting. Choose a well-ventilated area and cover the floor with a tarp or plastic sheeting to catch any overspray. Place the trims on a flat surface and apply the primer according to the manufacturer's instructions. Once the primer is dry, you can apply the colour paint. It is generally recommended to use spray paint specifically formulated for plastic wheel trims, as it has higher pigment content, is more chip- and wear-resistant, handles higher temperatures, and repels brake dust better than ordinary spray paint. Apply multiple thin coats, following the recommended wait times between coats, to achieve the best results. Finally, apply a clear coat to protect the paint and extend its life.
When spraying or brushing, be sure to follow the manufacturer's instructions for the specific products you are using. Each product may have different recommendations for drying times, application techniques, and the number of coats required. With the proper tools, preparation, and technique, you can achieve a professional-looking finish on your plastic wheel trims.
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Frequently asked questions
Spray paint is the best way to paint plastic wheel trims.
Any car paint will do as long as you use a plastic primer first.
You will need to remove grease and clean the trims with isopropyl alcohol or another rubbing alcohol. You can also use a product like gunk engine cleaner or wheel cleaning liquid.
To prevent flaking, you can use a sealant or clear top coat. You can also use Kiwi shoe polish if you want the paint to stay black for up to 10 years.
Using a paintbrush is not recommended as it will not give a smooth finish.
