He said they would probably now meet up by the Redwoods Visitor Centre or the main Waipa Mountain Bike Car Park.
Rotorua District Council deputy mayor Dave Donaldson said that area, which was a common parking area, was not a designated car park and council did not recommend people leave their cars there.
"Forestry managers Timberlands don't approve of [having a carpark there] and we have no say over that as a council," Mr Donaldson said.
"Recreational parking is an issue that council is actively addressing as the forest gets 425,000 visitors a year. The more popular carparks are less likely to have this kind of activity."
The forestry area is routinely patrolled by Independent Security Consultants Limited for Timberlands.
Forestry division manager Scott Dellow said its staff checked the Eight Mile Gate Rd as part of their patrols.
"We monitor the gate areas and do random patrols on the weekend," Mr Dellow said.
"Some of the buildings around there are monitored by other security companies.
"There's also a camera at the Waipa mill."
Rotorua police prevention manager Inspector Ed Van Den Broek said the break-ins had been reported and police were investigating.
"Police recommend people park in designated car park areas and lock vehicles," Mr Van Den Broek said.
"People should also keep any valuables out of view."
