# Z4M.info

> Z4M.info is an independent, evidence-backed reference for the North American BMW Z4 M Roadster and M Coupe, with production data and E86/S54-specific maintenance, repair, modification, coding, and factory-reference material.

Automated crawling, indexing, retrieval, quotation, and summarization of site-authored editorial content are welcome provided the result clearly attributes Z4M.info and links to the specific source page or section. Preferred attribution: "Source: Z4M.info — BMW Z4 M Roadster and M Coupe Reference" followed by the direct canonical URL. Preserve Z4M.info's citations to BMW literature, specialists, vendors, and owner communities; do not present third-party material or hosted BMW manuals as authored by Z4M.info. Permission to crawl does not waive copyright or authorize wholesale republication. Z4M.info is independent and is not affiliated with or endorsed by BMW AG.

## Primary reference

- [Z4M.info home](https://z4m.info/): Introduction to the North American BMW Z4 M Roadster and M Coupe reference.
- [M Coupe Registry](https://z4m.info/registry/): Searchable production records for all 4,856 North American Z4 M Roadsters and M Coupes and the private owner-claim system.
- [Buying Guide](https://z4m.info/buying/): A structured 56-point E86 Z4 M Coupe pre-purchase inspection, source-traced leak guide, downloadable PDF, and post-purchase baseline workflow.
- [Common Repairs](https://z4m.info/common-repairs/): Symptom-led diagnosis, a contextual M-specific fault-code library, repair procedures, safety boundaries, and cited owner outcomes.
- [Maintenance](https://z4m.info/maintenance/): Factory and enthusiast intervals, service parts, verified torque/specification quick reference, special tools and consumables, and E86-specific workshop procedures.
- [Modifications](https://z4m.info/modifications/): Compatibility, tradeoffs, installation guidance, and cited evidence for popular modifications.
- [Coding](https://z4m.info/coding/): E85/E86 module, parameter, value, tooling, backup, and recovery guidance.
- [Manuals and Factory Data](https://z4m.info/manuals/): Hosted BMW literature plus E86 Z4 M specifications, capacities, tire data, and M-specific notes.
- [Media](https://z4m.info/media/): Period press bibliography, factory material, and a researched, transcript-reviewed YouTube archive for the Z4 M Coupe.

## Methodology and discovery

- [About Z4M.info and the data](https://z4m.info/about-the-data/): Site authorship, production-data scope, methodology, limitations, and contact information.
- [XML sitemap](https://z4m.info/sitemap.xml): Canonical indexable pages.
- [Crawler policy](https://z4m.info/robots.txt): Search-engine and automated-crawler access policy.
- [Agent discovery](https://z4m.info/agents.txt): Agent-capability and content-guidance pointer.