Rather than the standard 32 tracks, v7.0 pushes the boundaries with 656 fully playable custom tracks and 10 battle arenas.
You must own the original Mario Kart Wii game to legally create an ISO/WBFS file. mario+kart+wii+deluxe+70+download+exclusive
Ensure your SD card is formatted to FAT32. Rather than the standard 32 tracks, v7