If any program could somehow convert or handle .kmp and .brres files, it would be SZS Modifier, a program specially designed to work with and edit various files from Mario Kart Wii. However, we could not reliably verify, whenever a conversion of this kind is actually useful or even possible.
Convert Mario Kart Wii course description file to Mario Kart Wii object file.
We found one software available in the database for this conversion.
Other operating systems or devices software - convert kmp to brres on other devices or OS
A program for creating Mario Kart Wii texture hacks
Convert from kmp file format
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.