To be safe, driving on a flat tire at all is too far. If your tire has lost all air pressure, it not only will damage the tire beyond the possibility of repair, but can put you in harm's way. If you choose to drive it to the shop, stop every mile or so to check the tire's pressure.
As long as you don't see any dry rot occurring (cracks along the super flexed portions of where the flat is at) you really shouldn't have anything to worry about especially seeing as how it hasn't been driven on. A couple of days flat should not cause an issue.
The short answer to your question is “No”. But, if your caps are missing, then the valves will become filled with dust and other road debris, which will get blown into the tyre when you next put air in. Some of this dust will stick to the the valve seat and enable air to leak out.
Technically, it's the sudden failure of a tire due to wear, defect, or most commonly, under inflation. Most tire blowouts are caused by under inflation. Tire under inflation causes the side of a tire to flex more which generates heat. It's the heat that leads to the blowout.
There are two main reasons why tires lose air with no obvious injury: valve stem failure and mounting problems. Age, exposure to contaminants, and stress can cause these parts of your tire to fail. The valve stem is the mechanism that allows you to put air in a tire.
When your wheels aren't lined up perfectly straight, your car's ability to turn in either direction is dramatically inhibited. It's not uncommon for bad alignment to also lead to flat spots or even tire blowouts from added friction on the wheels that don't properly line up.
A bent rim can be obvious to the trained eye. The rim rests on the outer edge of your tire and maintains the air seal between your tire and your wheel. At best, an untreated bent rim can cause tires to leak air over time. At worst, you're looking at a flat tire or a blowout.
Does breakdown cover fix flat tyres? Yes - flat tyres are one of the most common breakdown causes. If you've got a flat, a mechanic will come where you are and change your wheel. If you have a spare tyre, the mechanic will fix this for you.
When you get a flat tire, turn on your emergency lights and slow down. Pull over as soon as you see an open stretch of road away from traffic. You don't want to change your tire too close to oncoming traffic.
You can't mix run flats and standard tyres. Run flats are only fitted to new cars which have a TPMS, tyre pressure monitor system. If you want the cheaper option of replacing a run flat with a conventional tread, you will have to buy four – actually, make that five, because there will have to be a spare too.
Carmakers are skipping the spare because of regulatory pressure to squeeze more miles out of every gallon of fuel: Ditching the 40 or 50 pounds that a tire and jack usually add to a car's weight helps to increase fuel economy slightly.
Trouble signs to look for
- Cracking or cuts in the sidewalls.
- Uneven tread wear.
- Excessively worn tread.
- Alternatively, you can use a Lincoln-head penny as a tread-wear indicator.
- Bulges or blisters.
- Excessive vibration.
You can leave it flat for months or even years and it will be fine. The flat spot where it was resting will come out when you inflate the tire. Just do not move the car. It will cause damage to the tire and could bend the rim.
Yes. But I would suggest that in the future you jack the front first, which allows the use of chcoks, p-brake, and transmission (put the car in a forward gear) to keep it from rolling while you are jacking it up. Jacking the back only allows chcoks for this on the front.
Jack stands only. Leaving a jack up overnight is dangerous to the car and its surroundings. Not so much to the jack per se, but even the slightest leak can cause it to collapse over time. Also the jack, like a torque wrench, should be stored with the valve open and the jack dropped, to reduce issues with the spring.
If you don't have time to move a full-size wheel to the front and to put a spare on the back, then you've got a difficult choice. The safer option is towing your car to the nearest shop, though. If you had to go just a couple of miles at low speed, putting a spare on the front may be ok.
