Super Fiesta BTB Vehicle Spawn Times

Greetings Earthlings.
Loving BTB Fiesta at the moment, so much carnage.
Lately every game I play in our vehicles get stolen, can anyone tell me what the vehicle re-spawn times are please?

(also add me if you want a chilled out team mate for BTB, Arena etc. Mostly on GMT evenings)

Also would like to know this.