Even the cleanest modern classic can be let down by tired, faded black trim. Don’t let dull plastic ruin your car’s look—restoring that factory-deep black is easier and more permanent than ever. Here’s how to do it step by step, without shortcuts or snake oil. 🧪 Why Your Plastics Look Like Chalk Your paint can be flawless and your wheels perfect, but if the bumper trim looks like someone dusted it with flour, the whole car reads as neglected. Good news: this is one of the cheapest wins available on a 20-year-old car. Unpainted black plastic gets its colour from carbon black pigment mixed into the polypropylene, plus oils and UV stabilisers baked in at the factory. Two decades of sunlight breaks those polymer chains at the surface, the stabilisers get consumed, and the oils evaporate. What's left is a dry, porous, micro-cracked layer that scatters light instead of absorbing it — hence grey. On an E46 it's always the same three spots. The win...
Even the cleanest modern classic can be let down by tired, faded black trim. Don’t let dull plastic ruin your car’s look—restoring that factory-deep black is easier and more permanent than ever. Here’s how to do it step by step, without shortcuts or snake oil. 🧪 Why Your Plastics Look Like Chalk Your paint can be flawless and your wheels perfect, but if the bumper trim looks like someone dusted it with flour, the whole car reads as neglected. Good news: this is one of the cheapest wins available on a 20-year-old car. Unpainted black plastic gets its colour from carbon black pigment mixed into the polypropylene, plus oils and UV stabilisers baked in at the factory. Two decades of sunlight breaks those polymer chains at the surface, the stabilisers get consumed, and the oils evaporate. What's left is a dry, porous, micro-cracked layer that scatters light instead of absorbing it — hence grey. On an E46 it's always the same three spots. The win...