Check your tyres tread depth, this can also be done at your local DUNLOP PNG Branch.
In order to effectively grip the road, evacuate water and maintain control, your tyres need to have a safe amount of remaining tread.
If the grooves in the tyre design have almost disappeared, the tyre will simply not grip the road as well.
This is particularly dangerous in wet or slippery conditions.
Plus if you drive with tyres under the legal tread limit, you may be fined.
You should check the wear of your tyres regularly. If your tyres are approaching the legal limit or if you have any doubts, get them checked at your local DUNLOP PNG Branch.