Quote Originally Posted by Morte66 View Post
Is there any adjustment for driver/co-driver weight in WRC? Or does a heavier co-driver weigh you down?
No, crew with equipments must have at least 160 kg (if I am not mistaken).

When the car is weighed during an event, usually the FIA takes the measurement withouth the crew (and the minimum weight is the one from the technical regulations) and also with the crew. If the crew's total weight is less than 160 kg, than the car withouth the crew must be heavier.