All wheels must be fitted with a professional torque wrench, tightened to the correct torque specification. Check and re-torque your wheel bolts or nuts after the first 30 miles of driving to make sure they're still correctly secured.
We supply new bolts (or nuts), locking bolts (or nuts) and a locking key with every fitting. Keep the key safe: a replacement is tricky to get hold of.
Find your van's exact figure on the wheel torque settings page.