[JamesM3M5]

To answer the original question: The original bolts are OK to reuse. TIS states 100Nm (75lb-ft) on the M12 bolts on the front, and 165Nm (124lb-ft) on the rear bolt. It does state to use a new nut, but this is to account for the self-locking feature of the nut. It is OK to reuse the nut a few times, since the distorted-thread lock nut still holds up well. It's not even really necessary to use a self locking nut in that application, just good practice. They are not prone to vibration and loosening.