you can adjust the mechanical failure rate to be more realistic for any racing era.
in your papy_ai.ini file the line you're looking for is,
mechanical_failure_chance = 12.0
ballpark numbers are,
1990s = 20
1980s = 34
1970s = 47
1960s = ?
no failures = 0
in your papy_ai.ini file the line you're looking for is,
mechanical_failure_chance = 12.0
ballpark numbers are,
1990s = 20
1980s = 34
1970s = 47
1960s = ?
no failures = 0