Tank
ResistDamageModifier
damage-type=gunfire
amount=0.20
ResistDamageModifier
damage-type=explosive
amount=0.20
armor-plating
enabled-target-flags=tank
ResistDamageModifier
damage-type=armor-piercing
amount=0.10
ResistDamageModifier
damage-type=explosive
amount=0.10

(Tanks also inherit from Vehicle)
Vehicle
enabled-target-flags=vehicle
gunfire
amount=0.40
ResistDamageModifier
damage-type=explosive
amount=0.20
Total Base Resistance:

60%

50%

10%