Lower Anchors: There is no general consensus between vehicle and child restraint manufacturers as to the upper weight limit for the lower anchors. If the child restraint manufacturer's instructions, the vehicle owner's manual, or this table do not discuss the issue, it is best to assume that the maximum weight allowed for the use of the lower anchors is 40 lbs.

Since the lower anchors bear the brunt of the force in a crash, concern for their upper weight limit is especially important. Unlike tether anchors, for which there is no alternative, the vehicle's safety belt--which was designed to restrain large adults--is an effective substitute for the lower anchors when securing a restraint used by a heavier child.

Tether Anchors: There is no general consensus between vehicle and child restraint manufacturers as to the upper weight limit for tether anchors. Certain specific vehicle manufacturers have stated an anchor weight limit; to find out check your vehicle owner's manual or this table. In cases where the vehicle manufacturer is not specific, you can assume the upper limit is 40 lbs. Abiding by this limit is problematic, as there are many restraints on the market sold especially for children weighing over 40lbs and requiring the use of a tether. For more information on this controversial subject, please read this excerpt from the SafeRideNews LATCH manual.