Completely flat, then I tend to use a compressor, and maybe wait until after 7 am at least. It takes about 4 to 5 pumps to increase 1 PSI in the small tires on the iQ. (Yes, it is capable of handling car tires. It is in the Automotive section in Walmart). On average it takes 6 pumps per PSI in the tires that I check. (I check 6 cars actively every time). The worst is those large tires on the BMW I mentioned, about 7 pumps per 1 PSI. Since I check every two weeks tires are usually down only by a maximum of 2 PSI. That would be about 12 pumps per tire. (I usually remove my sweater somewhere in the middle of checking the 6 cars when that happens. Only once or twice a year...). No, I’m not joking, that is my preferred pump. I don’t want my neighbors to hate me or call the police for noise! The little metal “valve” gets very hot if I try to pump a lot/very low tires, so then I would get a ZIP lock bag with crushed ice from the fridge to put on the connection from the pump body to to the black hose to try to keep it cool. I’ve done it, but it does fatigue the pump from lots of heat.
Yesterday after picking up my son from school we drove home and as we reached the house I noticed the TPMS light on. I told my son I think we have a flat, then I forgot to check the tire pressures yesterday. I checked all 4 tires this morning and absolutely nothing wrong. Since the tire repair kit had been used, (goo bottle empty), when I purchased the car, I'm guessing the goo is causing trouble with one of the sensors, again, although it seems only once in a very long time. (I don't drive the iQ very much though).
Sigh....
I carry a rope-style plug kit, tools to pull the nail or whatever, and 12 Volt air compressor in all of my cars.
Still, if you are near enough to an America's Tire, (or Discount Tire in other states), just go. They will repair with the plug-patch, and do so, without charge. (Another reason I became a loyal customer to them is because they have price matching, even to Sam's or Costco, or Tire Rack, used to split the shipping. Of course now that Tire Rack doesn't charge shipping, I guess no shipping charge)....
Yes, part of the reason I am loyal to them.no charge even you didn't purchase the tire from them?