Car Tyre Dimensions Explained

Before mounting tires on wheels the tire and wheel diameters should always be confirmed to match. To calculate a metric tire size into inches you multiply the first number by the second number devided by 100 which gives you the sidewall height in millimeters divide it by 254 to convert it to inches.

How To Read Tire Sizes Tyre Size Learn To Read Tire

Its referred to as an aspect ratio because actually a percentage of the tyre width - so in this case the sidewall height is 50 of the width.

. For example a tire size 28535-19 has a tread width of 99. It is important to ensure you fit the right-size tyres to your car. The first set of numbers 205 in this instance refers to the width of the tyre in millimetres.

How Tire Sizes Explained. Call Us Or Make A Reservation Online. This number is the width of the tire in millimeters.

The numbers following the first letters -- before the slash -- indicate the section width of the tire. Check out Tire Size Explained Reading the Sidewall for more. The wheel diameter in inches or millimeters is the fifth set of numbers and letters.

Each metric tire measurement shows both the metric tire size and the inch equivalent. The larger this number the wider the tire. Mavis Is Your Tire Source For Discount Prices.

Thus a tire with the measurement P225 is for a passenger vehicle and has a nominal width of 225 millimeters. So in this case section with of. The first number is the width of the tyre in millimetres.

205 indicates the normal section width of the tyre in millimetres 205mm. Therefore this radial tyre has a width of 205mm. Reference this old tire size conversion chart to equip your old car or truck with modern radial tires.

In this article well teach you to decode the information behind numbers on the sidewall. To get the sidewall height take the tire width of 215 mm and convert it to inches 846. The letter R depicts the variety of tyre.

Section width is a distance across the widest point of the tire. The first number to appear in your tire size information is the width in millimeters of the correct tires for your vehicle. You can find that on the sidewall of the tires on your original wheels or the inside frame of the drivers door.

Our tire fitment guide covers a variety of tire types and sizes. We break it down below. Essentially this refers to the height of the tyre sidewall.

The 65 confirms the height shown as a percentage of the full tyre width. These will usually be the same size as the old tyres but if you bought your car used look at the tyre placard located inside one of the front door. Numbers that come before slash indicate tires section width in millimeters.

Ad Find Top Quality Tires For Discount Prices Take Advantage Of Our Price Match Guarantee. So in the above example a tyre that has an aspect ratio of 55 would have a. Tire size dimensions graphic Old Tire Size Conversion Chart.

R indicates radial ply construction. This gives you an answer of 55 the sidewall height in inches. Look at the markings on the side of your cars tyres which tell you the tyres type size and load and speed ratings.

Tyre type Next are the letters ZR which indicates the type of tyre dependent on how it was constructed. For example a tire size 35X1250-20 is typically fitted on a 90 wide wheel therefore the tire width is 125 with the wheel much narrower than the tread width. View Featured New Tire Promotions And Find A Local Mopar Dealer Today.

This refers to the tyre being a radial type- this is like the majority of the tyres used today. In this example the aspect ratio is 65 meaning the sidewall is 65 percent as high as the tire is wide. The overall diameter is then the wheel diameter plus 2 sidewall measurements and.

Very occasionally alternative letters are shown to indicate other types of. 65 indicates its aspect ratio a comparison of the tyres section height with its section width 65 indicates the height is 65 of its width. If a tire manufacturer notes that a 23545R17 tire has an ac-ceptable rim width range of 75-90 inches dont deviate.

15 indicates the nominal diameter of the wheel rim 15 inches. Ad Schedule A Service And Make Sure Your Vehicle Has What It Needs To Keep You Safe. Then multiply this by 65 65.

First start with the wheel size for your vehicle. This number is calculated by dividing the tyres section height by the tyres section width so if the tyre has an aspect ratio of 45 the tyres height is 45 of its width. The 4th and 5th number give the height of the tyre sidewall - also known as the aspect ratio.

Muscle car or race car with helpful diagrams. The widest point from sidewall-to-sidewall. Ad Spend 50 on Accessories and Well Ship Them For Free.

These sizes are usually 145 155 165 175 and 195 inches and an example would be 33x125R165 118R. The second number 55 is known as the profile or ratio of the tyre. Tires and wheels with unique rim diameters should never be combined with traditional inch rim tires and wheels.

In this example the tire has a. For sports cars the general rule of thumb is to match the wheel width to the tread width in inches. If you mount that tire onto a 7-inch-wide rim the beads will be squeezed together beyond the tire design spec making it difficult to mount the tire and posing an increased chance for bead damage during mounting.

Tire width always refers to the measurement from one sidewall to another. The following two numbers 55 represent the aspect ratio or measurement of the sidewall height in mm. 50 - The tyre aspect ratio.

Essentially this is the ratio of the tyres cross-section to its width.

Tagged Diagram Of Tire Size Meanings Tyre Size Tire Size Calculator Tire

Tyrezone Tyres Car Mechanic Tyre Size Car Maintenance

Car Tire Numbers Explained What Do The Numbers Mean In 2021 Car Tires Car Maintenance Car Hacks