Yesterday whilst halfway into a 40 mile ride I stopped for a snack & coffee only to find upon resuming my front tyre flat , my Cube Agree C:62 SL which I purchased last February is fitted with Schwalbe One 700x25c tyres. I did a quick visual check of the tyre for any obvious causes for the deflation but didn't see any so I proceeded to inflate the tyre with the Lezyne Alloy Drive ABS pump which I purchased with the bike. Now I inflate both tyres to 100psi using a floor pump with gauge back home so here's my first question, Is the Lezyne hand pump capable of inflating a tyre to 100psi and if so after how may 'pumps' I was able to resume after 50 but could feel the tyre wasn't its normal 100psi inflated self. After about 1 mile the tyre had deflated again so I removed the tyre & inner tube to better check for the cause. I found a pin prick hole in the inner tube but no signs of any object through the tyre wall in the same area, I carefully fully checked the rest of the inner tyre wall but found nothing so I preceded to fit a new spare inner tube which I again inflated with 50 - 60 'pumps'. I resumed my journey back home but found to my surprise after a mile or two the tyre had again deflated. I eventually got home after several stops to re inflate the tyre. Now this got me thinking about whether to carry a CO2 inflator but having never used one. Second question, does the CO2 cartridge only inflate one tyre? and to what pressure would it inflate it to? Thanks for any advice you can offer.