I would like to propose the following, because not all flats are the same... You do not always have to repair the tire or do any physical labor right at the scene of the flat "crime". Most flats have a nail or object that has punctured the tire, and is still in the tire. The tire still holds air, and has a slow leak. Odds are that when you find the tire flat, you have been driving the car with the puncture for days already. There is NOTHING in the Continental sealant kit that will damage the tire. It's simply a watered-down latex product, is not caustic. It flows into the hole, temporarily plugging it. Having the Continental Conti Mobility Kit on board will mean that you will no longer require a spare wheel and tyre, so saving you up to 18kg weight and saving you much needed boot space. asimba2 wrote:Just FYI, the Continental Mobility kit that comes with the car states this warning about using the tire sealant:

The reason car makers include these mobility kits is they save weight and don’t take up valuable space. In modern cars, particularly electric vehicles, space is at a premium. And the area where the spare wheel once lived is often taken up with the battery or electronics. You’ll still need your alloy wheel keyThere is little risk of the subsequent patch/plug not bonding to the inside of the tire, IF IT IS CLEANED PROPERLY. (water...water...water...) and buffed properly. Just FYI, the Continental Mobility kit that comes with the car states this warning about using the tire sealant:

We’re supporting Highways England’s ‘Go Left’ campaign. If you break down on the motorway, remember to go left. Fair warning! If you don't remove the bottle of sealant shortly after using the kit...it will be permanently glued to the compressor. The compressor can be reused if you keep the orange plug cap! Be sure to clean out the compressor afterward as much as possible to remove the sealant. The ONLY issue with using the Conti Mobility Kit is the inconvenience of clean-up prior to plugging/patching. The consumer is trading the CONVENIENCE of an emergency repair with the INCONVENIENCE of clean-up. For centuries, mobility has been one of the most important human needs. Digitalization opens up completely new possibilities for realizing innovative mobility concepts and ideas. Tomorrow’s mobility is connected, individual, flexible and sustainable. We already offer our customers smart solutions today, creating innovative service offerings that also ensure individual mobility in the future. Continental Mobility Services supports you in developing and implementing comfortable, safe and efficient solutions for future mobility in and around vehicles.When using the Conti Mobility kit, you should pressurize the tire as high as possible, perhaps 40psi. Sealant WILL blow out of the hole. Driving 3-5 miles, at 30-40mph, will cause the sealant to solidify in the hole (air pressure plus friction) and the "hissing" will stop. If it DOESN'T stop hissing, the hole is too big , and in fact, you'll see that the PSI won't go anywhere near 40psi. When you are driving the re-inflated tire, I would keep an eye on the tire after a few miles, to ensure that the tire is still full of air. If the tire goes flat soon, then re-inflate and drive to a safe location or car repair place immediately. We’re called out to an awful lot of punctures so how effective are these mobility kits? What is a mobility kit? As I’ve already mentioned, the sealant won’t repair every puncture and it’s quite expensive. In addition, it’s not a permanent fix. It’s designed to get you home so you’ll need a new tyre as soon as possible. You might have noticed your car doesn’t have a full-size spare wheel and tyre. On more modern motors you might not find any kind of spare wheel at all. Instead, many cars come with tyre inflation kits, sometimes sometimes known as mobility kits.

The ContiComfortKit comfortably restores mobility in a few easy steps. The kit is simply plugged into the powerpoint outlet; a flexible hose at the other end is connected to the valve of the flat tire. Once the sealant tank is flipped up, a twelve volt compressor re-inflates the tire at the push of a button and simultaneously fills the tire with a liquid sealant, which seals the puncture. As a result, the tire can be used at a maximum speed of 50 mph for up to 125 miles. Drivers can get to the nearest tire shop and do not rely on road side assistance. A built-in light allows for easy use even at night. Thank you for your very complete list of needed items... Finally someone who is practical and can find solutions that don't cost a fortune...In my driving lifetime, I have almost NEVER had a flat that immediately released air in a hiss.. Most flats are found when you go to your car, and you see that it is flat. Or your dashboard TPMS (Tire Pressure Monitoring System} has a light.