Flats and Tire Pressure

Should say desired pressure on tire in tiny numbers

tire pressures can be found 1)on the tire sidewall,2)in your owners manual 3)and sometimes either in the glove box or on the VIN label inside the driversside door panel.

You did something wrong ! - Go back over ALL the work and double check everything.

by hitting anything

Front wheel 25 pond

back wheel 45 to 45 pond

The inflation pressure is on the sidewall of the tire.

that entirely depends on the size of the tire

Tires are rated for different pressures. Look on the tire at its min and max pressure ratings and make sure your in the middle. It is written on the sidewall of the tires.

The amount of air in the tire stays the same.The outside pressure drops about 3psi or 0,2 bar, when you are at about 2000 meters or 6000 feet. So you would expect that the pressure you measure is higher. But on 2000 meters height there is mostly a lower temperature, this lowers the pressure in the tire a bit. So it would not be strange if you measure the same pressure.

30kpa its on the inside right on the door on the driver side. ANSWER The information sticker for tire size and recommended inflation pressure is on the end of the drivers door - that is correct - pay close attention because the inflation pressures are stated in KPA ( kilopascals - metric system ) and PSI For example : The 30 kpa figure would not be correct because that is only 4.35 PSI 30 PSI would be 206.85 kpa

look on the tire itself and it will give you the tire pressure or look on the inside door panel of the drivers side it will be there also

Run flat tires are tires that can run even when flat at low speeds and till limited distance depending on the tire type. There is a significant difference in both the tires.

yes

It is written on the side of the tire.

Check the label on the driver's door jamb for proper air pressure. Do not use what is printed on the side of the tire. That is the max safe pressure for the tire, not the recommended pressure for the vehicle.

Air up, repair the tire.

On the door a few inches below the latch assembly...

Air (whether it is compressed or not) occupies space. This can be proved through an empty syringe experiment, by blocking the outlet and squeezing the pivot as far as it can go.

When the tyre is cold, the air molecules are free to collide with each other as well as the inner walls of the tyre - the tyres thus have a higher pressure

However when the tyre is hot, the molecules are sqaushed together they have little to no space to collide with each other or the walls of the tyre. This lowered movement thus creates a low pressure but a heated tyre.

Hence it is imperative to check your tyres before a long journey to avoid an accident.

How to replace the tire pressure valve on lexus rx 350?

That depends on two factors.

1. does it "wobble" at low speed (10-20 mph)? If so, the belt of the tire has slipped. Once the belt has slipped the tire is unsafe and should be replaced before you drive the vehicle at high speeds. A slipped belt can completely separate and can cause damage to the vehicle as well as causing the vehicle to become dangerously unstable. Belt separation is common when a tire is driven flat or low.

2. if it only "wobbles" at high speed (50+ mph), the tire is out of balance, probably because of a settling of the fix a flat compound.

In either case, the tire should be taken to a qualified tire specialist for replacement or repair.

Firstly, it must be done every week to get the most out of your tire's performance. according to Goodyear, a tire can lose up to 10 pounds of air pressure in one month. The firmer tires, the less rolling resistance and friction they will have on the road. Breaking performance will also be more consistent since the tires sit evenly on the road. In addition, tires will be more resistant to blowout if and when you hit a rock, a pothole or other road imperfections at speed.

They are only flat at the bottom.

it varies from model to model, but from my time working for nissan, they were generally 32psi front 30psi rear

The recommended tire pressure for OEM tires on a Toyota Sienna is 35 psi, but you should pay attention to and follow the tire manufacturer's specifications for any aftermarket brand of tires that you purchase.

It is the depth of the grooves in the tyre.

By rolling over glass or any sharp object.