Mario Kart Wii Save File: What It Stores & How It Works

A Mario Kart Wii save file (stored on Wii NAND or SD Card) is a single binary blob containing your entire career profile.

Data Stored

• License/Profile: Mii, Name, Region, Controller Preset (Wheel/Classic/GCN/Nunchuk).
• Grand Prix Progress: Cups unlocked (Mushroom → Star → Lightning), CC tiers (50/100/150/Mirror), Star Ranks (1★–3★) per cup.
• Unlocks: Characters (14 base + 10 unlock), Karts/Bikes (36 total), Wheels, Gliders (via Coin totals / Ghost data).
• Time Trials: Ghost data (Staff, Expert, Personal Best) per track. Top 10 times.
• VS/Battle Records: Wins/Losses, VR (Versus Rating) / BR (Battle Rating) for Nintendo WFC (defunct) / Wiimmfi.
• Options: Screen layout, Sound, Rumble, Language, Sensor Bar position.
• Controller Calibration: Wii Wheel / Nunchuk calibration data.

File Management

• Location: Wii System Memory (NAND) /title/00010000/524d4345/data/savefile.dat (or similar). Copiable to SD Card via Data Management.
• Multiple Profiles: Supports up to **4 save slots** (4 licenses) per Wii. Each is independent.
• Corruption: Power loss during save = corrupt file. Wii prompts format. Backup to SD Card regularly.
• Homebrew: SaveGame Manager GX / Checkpoint (Wii/3DS) can extract/inject saves for editing (unlock all, VR edit) or backup.

Wiimmfi (Online Revival)

To play online today: Install Wiimmfi Patcher (via CTGP-R or Wiimmfi Patcher Channel). Your save's VR/BR and Ghosts sync to the private server. FC (Friend Code) is generated from console ID + Save Slot.