The wheel bolts must be tightened to 140 Nm. Overtightening can damage the nuts and the bolts.
Only use rims that are tested and approved by Volvo and which are Volvo genuine accessories. Check the tightening torque of the wheel bolts with a torque wrench.
Locking wheel bolts*
In the foam block under the cargo area floor there is space for the sleeve for the lockable wheel bolts.