Anti rollbar- What are the signs/symptoms of damage/wear?

[hugodc]

antiroll bars dont really wear, its essentially a metal bar that twists. Its most likely bushes, i'd get underneath and check the condition of all the front suspension bushes

[Sam_68]

As Hugo says, ARB's themselves don't wear (though they do occasionally break), but the droplinks that connect them to the rest of the suspension and the bushes they are mounted to the chassis on certainly do. Worn droplinks in particular will produce a knocking noise as the wheels run across bumps and surface imperfections, which could be what you're describing.

Trouble is, other worn components in the suspension and dampers can produce similar noises, and diagnosing noises over the internet is notoriously difficult!

It can be a slight hint that it's the ARB droplinks if the knocking noises disappear when your cornering ('cos when cornering, the ARB is being twisted and any 'slack' in worn droplinks will be taken up), but it's far from foolproof, so you'd be better off getting all suspension and ARB joints and buishes inspected for wear, as suggested above.