Bicycle Car Tires

Instead of one big wheel at each corner of the car, have four bicycle wheels bolted together. If the bolts that hold them together are the same bolts that hold them onto the car, even better.

If one tire gets a hole, the other three at that corner of the car can probably still support the car's weight.

If a tire needs changing, the hardest part becomes jacking the car up and getting the bolts off, since the skinney bike wheels can be taken off one at a time, and they are individually much lighter than any car wheel.

You can store two or three skinny wheels in the trunk, in less space than a full sized wheel (this assumes you don't pierce all 4 tires at once).

Repairing a bike wheel is easier than repairing a car wheel, since it can easily be lifted up to a work area at a convenient hand height. And if you want to apply a patch to the inside, instead of using a plug, it's easy to remove the tire from the wheel and put it back, using only a screwdriver.

If a hole in a tire can't be repaired, you can get a new rubber tire for it at any sporting goods store, for around $20, and easily put it on yourself. And if you don't mind putting a new tire on a wheel on the side of the road, you can even store spare tires in your glovebox.

If a set of bicycle tires wears unevenly, for example the outside one is more worn than the inside ones, then you could rotate the individual tires to get more even wear. Or perhaps replace the most worn tire, then rotate.

The bicycle tires are narrower and have a rounder profile, and the spaces between them are deep enough to channel water away from the road contact surfaces, so hydroplaning is reduced, even if the tires don't have deep treads.