Simple solutions for simple problems
What should you do with a flat tire? On the bike. An obvious solution is to haul out the footpump, and put air where it should be. But, what if the tire goes flat again, within the hour? Well, you will need to replace the inner tube. Not expensive, not complicated.
OK, but what size? That information is printed on the sidewall of the tire. Can’t be misplaced. However, if you can’t read the raised inscription on the tire, you’ll need to do more. Yes, the tube size is impprtant and directly related to the size of the tire. Just remove the bike wheel ang get a closer look. Oh, you can’t, because we are dealing with an “e-bike”, and getting the wheel off is a whole other level of complexity?
In that case, go to the bike shop. Put the bike on the rack, and on the next city trip. Oh, you can’t. The rack doesn’t fit the mounting bracket on the car. The new mouunting bracket. Is there an adapter? No, but they sell then in better auto stores. Make sure you get the size right, and assure that the holes for the big bolt match up.
Do you see a pattern emerging? What might have been simple, when I was young, is now becoming a nightmare. In fact, we will have to call in some experts. As I see it, on the next trip to the city, the adapter for the bike rack will be a purchase. Then, back home, the bike will go on the rack, for a trip to the bike shop that actually does this sort of thing (repairing flat tires on an “e-bike”). On the third day, the bike will return to the road, until the next incident. Rinse and repeat.
Simple solutions to simple problems is an oxymoron. There are no simple problems, hence no simple solutions. Things take longer than forecast.