How much psi in a car tire




















Rapid, uneven tire wear. When you drive with under-inflated tires, you risk: Tire failure and safety. Underinflated tires greatly increase braking distances and can dramatically affect steering and handling. That friction can lead to overheating, which can cause tread separation and blowouts in extreme cases. Premature wear , reducing your tire life by 15 per cent or more. Under inflation wears your tires on both outside shoulders because the edges are making excessive contact with the road.

Poor gas mileage. Vehicles with underinflated tires see reduced fuel economy because they make your engine work harder: underinflated tires put more tire surface in contact with the road, causing more rolling resistance and friction with the road. The result is poor gas mileage and higher fuel costs — up to 1. Depending on how often you fill up, that can lead to hundreds of dollars over the space of a single year.

How do summer and winter temperatures impact tire pressure? Winter When the temperature drops, air contracts and as the molecules get closer together, the reduction in volume causes tires to lose their pressure.

Summer Just as cold outside air causes the air inside your tires to contract in winter, warm outside air causes the air inside your tires to expand in summer. Was this article helpful? Find a Store. Related reads. Featured article Which spare tire is right for you?

Learn all about what tire load index is and have a look at our handy tire load index chart. Ever wonder what your tire's rolling resistance is or why one set of tires wears faster than others? Read on to find out those answers and more. Do you mount new tires in the front or the back of the vehicle? Find out and visit the professionals for proper tire replacement. Find Store. Find a Different Location Find a Store.

Do you want to change your Preferred Store? This displays the width of the tyre in millimetres. A tyre marked will measure mm across the tread from sidewall to sidewall.

The fourth and fifth digits of the tyre code that immediately follow the tyre width. The aspect ratio or profile height of the tyre sidewall is expressed as a percentage of the tyre width. The next two digits represent the size of the wheel rim that the tyre can be fitted to. It is also the diameter of the tyre from bead to bead.

So a tyre marked 16 will fit on a inch wheel rim. The speed rating of a tyre is represented by a letter of the alphabet at the end of the tyre size code and indicates the maximum speed capability of the tyre. Tyres receive a speed rating based on a series of tests which measure the tyres capability to handle a set speed for a prolonged period of time. If you are unsure what speed rating you need, be sure to check your vehicle handbook.

Choosing a lower speed rating than that recommended by your vehicle manufacturer could potentially invalidate your insurance. Cookies and your privacy Our website uses cookies to place bookings and help us provide a better service. Main Menu. Servicing Information What service do I need?

Why service your car? What's included in my service? Other Products Join Kwik Fit Club today and combine your regular vehicle maintenance costs into a simple monthly subscription. Home Tyres Tyre Pressure Search. Tyre Pressure Search Maintaining the correct tyre pressure will help to extend the life of your tyres, improve vehicle safety and maintain fuel efficiency.

What should my tyre pressures be? Search By Vehicle Number Plate Enter your vehicle number plate below, click 'Search' and we will find the tyre pressure for your vehicle. Sorry, we could not find tyre pressure information for your vehicle.

Why Correct Inflation Is Important Maintaining the correct tyre pressure will help to extend the life of your tyres, improve vehicle safety and maintain fuel efficiency. Correct Inflation. Under inflation. Over Inflation. Under inflated tyres Tyres can quickly become underinflated if you don't check them regularly.

Over inflated tyres On the other hand, putting too much air in your tyres can be just as damaging and costly. Correct tyre pressures It's not always apparent that air is being lost from your tyres, but it generally escapes at the rate of up to two PSI of air every month.

Tyre Pressure Measurement Converter Bar and psi are both units of pressure used by car manufacturers to specify the correct tyre pressure for a particular vehicle. What are you looking for?



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