Tire valve defects on pirelli tires - 5 flats in less than a year

Does your vehicle tell you which tire is low or just that you have a low tire somewhere? Is the lamp just on or flashing? What is your year--make--model? Was the tire put back in the same position on the vehicle?
Many manufacturers recommend breaking the bead at 90--180--270 degrees from the valve to avoid catching the edge of the sensor. If metal valve has a nut, with deflated tire, you can remove the nut and let sensor fall down inside tire to avoid damaging sensor, different manufacturers may recommend different procedures. I'm not saying the sensor is damaged or somebody did something wrong, I have no idea, at the moment. I don't even know your year--make--model?

Odd question

Where does safety come in here?
All tire mfg make safe tires for your car

That said there are some that won't be so good
on it

Pirelli's are too hard a ride in my opinion

Tire Rack is the place to look & read reviews

Then go to at least four stores to look at tread designs

I would suggest you look at cooper tires if they have your size
in the tread you want

Goodyear are too expensive & so forth etc

Take your time doing some research

Rims can have tiny cracks too. A water test, where the wheel is completely submerged might show the source of the leak.

if you look at driver door jam. Either on the actual door or on the cars frame once the door is open. .youll see a sticker there telling the manufactures recommended tire size and tire pressures for front and back tires

You will not like the price, of any of the tire choices, you have today

Any tire will be $200 ea

The tire rack is a good site to evaluate tires

Always go to several tire stores, to look at what your
interested in. Size doesn't matter for looking at tread design

I don't think, you thought out that question
You own the vehicle,you control tire selection,maintenance,etc

OEM tires are just that. It is possible that your car came with
any number of different brands. The factory will make a run,then
switch venders. All about money & savings
Usually the OE tires, are not the best, as far as wear

All you need, is a quality tire, and the outside diameter is critical
with AWD. That said, after you inflate,buy and then measure the outside of
the tire,what do you do. If you own a shop you can try several tires

My advice, is commit to some serious money,we have no choice,we have to use
what the vehicle was designed for
I wouldn't own a 4x4 or AWD, and run a summer tire. Without an aggressive tread you
defeat the purpose of AWD
So I would suggest you step up to the most aggressive tread you can find, in the correct size
You most likely got, what I call street tires,a florida special

Those less aggresive tires are no good in snow.
And 4x4 and AWD only drives on one tire per axle, not all 4

Pirelli --from my research,coinsidently is at the bottom of the list,forget them

If the valve stem is leaking or just defective as you say have it or them replaces at about $5 each at the most. PS they are seperate from the tire so no need to replace the tires.

Run flats cant be repaired. You can however just replace all the tires with a different style tire like most all vehicles on the road and carry some fix-a-flat or a compressor and plugs for emergency needs till you can get this punctured tire patched.

That was a very common problem in the S60 R cars. The only solution is to put the original equipment tires back on. I mean the same manufacturer and design. I believe they were pirelli tires (spelling sorry) as to the design, PZero's I think

contact the tirerack.com, they are the experts, been around a long time, they have a great web site or u can call them.

it is most likely the valve stems. take off the caps and spray some soapy water in them and around the base. if there is a leak you will see bubbles.