ok - i didnt say this.. but at a victorian police station, it was found out that the police car tires were being changed at a rate of 4 per week (with 10 cars in their lot).... so that means on avarge, each car was getting new tires every 10 weeks....
found out the boys had a deal with the local tirepower where they would say it had a "puncture" - but just give them the new one.... so all their personal cars had fresh tires.. nice hey!