The options to change car types in custom races in gt7 is locked

[lg_appliances]

I want to change the rivals selection but I doesn't let me. This is not my first time playing this

 

[TumeK5]

"One make"...that's your problem.

 

[CommandrCyclops]

Some cars, like the Kart and some VGTs, only allow a one-make in custom race.