Comparing the roads in Malta (and the driving skills in the main towns) to where we live in Limassol, Cyprus, where driving is particularly bad - I would not recommend hiring a bike in Malta.
Many of the road surfaces are badly worn, shiny and slippery. In the towns, there is little attention paid to lane control and the road signs aren't the best we've seen.
We've just returned from our 4th visit to Malta (Bugibba/Qawra area) and were initially considering hiring a car as we fancied a trip to Gozo this time. However, funds were a bit low this time so we decided against it and are very glad we did. One, the weather was pretty atrocious - the worst we've had at this time of year so it was unlikely we would have made the trip to Gozo and we still can't fathom out the route from the airport to Bugibba
Yet, we've been in Cyprus for 5yrs and are used to seeing car drivers lighting cigarettes, talking on their mobiles, doing their hair or makeup etc etc... Again, there isn't much care for lane or driving etiquette out of the main towns and cities, traffic lights are jumped at every opportunity, speeding is a necessity as is not having kids strapped into car seats or belted in - but we still feel safer on the roads here!
They don't have a song called the Malta Calypso for nothing!
Be wary....
CwB