In this video I remove the front wheel arch liner on my 1998 BMW Z3 2.8 Roadster (Arctic Silver, 5-speed manual) to inspect the condition of the front section of the inner sill—a well-known corrosion area on Z3s.

After removing the liner, I found that all of the original fixings were heavily corroded, so I replaced them with new genuine BMW fasteners (Part No. 07147129161). Fortunately, the metalwork was generally in good condition, with only minor surface corrosion present.

To prevent future rust development, I wire brushed the affected areas and treated them with Bilt Hamber UB Dynax Firm-Film anti-corrosion wax for long-term protection.

If you own a BMW Z3, this is a worthwhile inspection that can help identify corrosion before it becomes a serious structural issue.

Parts used:
• Genuine BMW fixing screws/bolts – Part No. 07147129161
• Bilt Hamber UB Dynax Firm-Film

Car details:
• 1998 BMW Z3 2.8 Roadster
• 5-Speed Manual
• Arctic Silver Metallic

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Disclaimer - Please be advised that my videos are not instructional and are merely footage of me, with many years of motor trade experience, carrying out vehicle repairs and maintenance. Please conduct your own research, ensure you have the correct tools/necessary expertise and undertake your own due diligence before carrying out vehicle repairs. If in doubt, entrust an automotive technician / car mechanic.