Due to Peak Season and Bad Road - it will be a mistake to travel Bahrain - Kalam,
Average time taken these days is 8 Hours one sided Plus your Tyres damage.
Kalam as such is not considered worth to such travel - Mahodand Lake is only Spot where you will really enjoy.
Try To gather information some other Trek like Kumrat Valley (mostly Jeep Trek) or Neelum Valley Till Taobat.