This is bugged. You have to go to practice mode to change tires. I can not even do this on race menu even if race has no limitations on tires.
"Driving options" before a race.
That's weird. Are you talking Race tires? I haven't used any yet, but can anyone confirm that you need to equip new suspension before it lets you equip Race tires?I have a rx7 fc, and i have tires, but when Im in the car settings screen, it says I have to tighten up the suspension before I can put those tires on? I think it is bugged. This happens in online lobbys as well.
For career mode:
Have you guys clicked on driver options (between driver select and> <settings) at the race start screen? Before starting a single race in career it should look like this...
Start --- Select Starting Driver --- Driving Options --- Settings --- Exit
You want to choose "Driving Options".