Alloy Wheel Powder
Coating in Exeter
& Devon

The toughest, most durable finish available for alloy wheels. Powder coating delivers factory-grade protection that outlasts conventional paint — in any colour you choose.

Industrial-grade powder coat facility. Any RAL colour. Trade and public customers across Devon.

What Is Alloy Wheel Powder Coating?

Powder coating is an advanced finishing process where dry powder — a mixture of finely ground resin and pigment — is electrostatically applied to the wheel surface and then cured in an oven at high temperature. The heat causes the powder to melt, flow, and fuse into a smooth, hard, continuous coating that is significantly more durable than conventional wet paint.

This process produces a finish that is 3–5 times thicker than standard paint, with superior resistance to chipping, scratching, brake dust, road salt, and UV degradation. Powder coating is the same process used by wheel manufacturers for original equipment finishes, and it is the gold standard for durability.

At South West Alloys, we offer powder coating in any RAL colour — from classic gloss black and silver to bold custom shades. The process includes complete chemical stripping, blast cleaning, and any necessary repairs before the powder is applied. This ensures the coating bonds to clean, prepared alloy for maximum adhesion and longevity.

Powder coating is ideal for drivers who want maximum durability — particularly those in areas with harsh road conditions, frequent motorway use, or vehicles exposed to industrial environments. It is also the preferred choice for colour changes, restoration projects, and customers who want a finish that requires minimal maintenance.

Why Standard Paint Falls Short

Conventional wet paint finishes on alloy wheels are vulnerable. The typical paint layer on a factory-finished wheel is 40–60 microns thick. Stone chips, kerb strikes, and even aggressive wheel cleaning can breach this thin layer, exposing the alloy underneath to corrosion.

Many aftermarket paint repairs are even thinner. Quick-fix respray services often apply a single coat of paint with minimal lacquer — a finish that may look acceptable initially but begins peeling and chipping within months. This creates a cycle of repeated repairs that costs more over time than a single quality finish.

Brake dust is one of the most aggressive substances your wheels face daily. It contains iron particles that are heated to extreme temperatures during braking and bond to wheel surfaces. On a thin paint finish, brake dust can etch through the lacquer and cause permanent staining. Powder coating's thicker, harder surface resists brake dust far more effectively.

If you are tired of paint that chips, peels, and corrodes — powder coating breaks the cycle. It is a one-time investment that delivers years of protection with minimal maintenance. For wheels that take punishment, it is the definitive answer.

Powder Types, Colour Options & Technical Specifications

We use thermoset polyester powder coatings designed specifically for automotive applications. These powders are formulated for excellent flow, high gloss retention, and resistance to brake fluid, fuel, and road chemicals. The cured film thickness is typically 60–120 microns — compared to 40–60 microns for standard wet paint.

Our colour range covers the complete RAL colour chart — over 200 standard colours. Popular choices for alloy wheels include RAL 9005 (Jet Black), RAL 7016 (Anthracite Grey), RAL 7024 (Graphite Grey), RAL 9006 (White Aluminium/Silver), and RAL 8019 (Grey Brown/Bronze). We also source specialist automotive colours on request.

Gloss finishes are the most popular and produce a deep, mirror-like shine similar to high-quality wet paint. Satin finishes offer a mid-sheen that reduces glare and hides minor imperfections. Matte finishes provide a flat, modern look that has become increasingly popular. Textured finishes — such as wrinkle or hammer-tone — are available for specialist applications.

The curing process is critical. Our oven maintains precise temperature control to ensure complete powder melt and cross-linking. Under-curing produces a soft, chip-prone finish. Over-curing causes yellowing and brittleness. Our controlled process ensures consistent results on every wheel.

Powder coating is suitable for all cast and forged alloy wheels. However, it is important to note that the oven curing temperature (180–200°C) is too high for wheels with bonded-on centre caps or plastic inserts — these must be removed before coating. We also cannot powder coat over existing body filler used in previous repairs, as it may outgas during curing.

For multi-piece or split-rim wheels, we can powder coat individual components before reassembly. This ensures complete coverage including the barrel interior and lip faces that are normally hidden by the outer rim.

Frequently Asked Questions