How to Find Out the Size of Car Tyres

How to Find Out the Size of Car Tyres

How to Find Out the Size of Car Tyres? Tyres are one of the most important parts of your car, and it’s important to know how to find out their size. There are a few ways to do this, but the easiest is to use a wheel measuring tape. To measure the width of the tyre, put the tape measure against the inner edge of one tread and hold it there while moving it around the circumference of the tyre. To measure the depth of the tyre, put the tape measure against the outer edge of one tread and hold it there while moving it around the circumference of the tyre.

What You’ll Need

In order to determine the size of car tyres, you’ll need the following:

-A set of car tyres
-A ruler
-A Phillips head screwdriver
-A spirit level
-A bucket or a large plastic container
-Water
-Soapy water
-Rubber gloves
1. Identify the make and model of your car. This information can typically be found on the driver’s side door jamb or near the engine bay.
2. Remove the four wheels from the car by removing the lug nuts and then lifting off the wheel.
3. Mark the circumference of each tyre with a sharpie or a pencil.
4. Reconnect the wheels to the car and measure the distance between each mark on each tyre. Use this information to calculate each tyre’s circumference in inches (or millimetres). [Note: If your car has more than one set of wheels, measure each tyre separately and record the results.]
5. To determine which size tyre is required for your vehicle, divide each circumference by 4 (in inches). This will give you the range of sizes that your vehicle requires. For example, if one of your tyres has a circumference of 26 inches and the other tyres have circumscences of 23, 25, and 28 inches, your car requires a size 31-inch tyre.
6. Remove the size 31-inch tyre from the bucket or container and place it on the ground so that the wheel is facing up.
7. Place a spirit level on top of the tyre and adjust until it is LEVEL.
8. Mark a centimetre line on top of the tyre with a pencil.
9. Fill a bucket half full with water and set it next to the tyre. Soapy water should be poured over the pencil mark on top of the tyre to create a sudsing surface. Rubbing bubbles should form on top of the soapy water – this indicates that the circumference of the tyre is accurate to within ±1%. If bubbles do not form, move the measuring device closer to the bubble formation and make additional adjustments until they do.
10. Slowly lower the car’s wheel onto the inflated tyre so that it seats completely into the sudsing area created by steps 7 through 9. Allow enough time for soap to seep into all interstices of wheel and tyre assembly before raising wheel off ground again.

How to Do It

If you’re the type of person who likes to DIY, then you will love this simple guide on how to find out the size of car tyres.

There are a few things you’ll need before getting started:
-A ruler or measuring tape
-A pair of scissors
-A piece of paper
-A tyre pressure gauge

Once you’ve gathered your supplies, it’s time to get started. To measure the width of the tyre, lay the ruler along one edge and mark the spot. Do the same thing on the other edge. Now, subtract 1 inch from both measurements. This is how wide the tyre is in inches.

To measure the height of the tyre, simply place the paper beneath it so that it’s level with one edge of the tyre and draw a line with a pencil. Then, measure up from that line and subtract 1 inch from that measurement. This is how high off the ground the tyre is in inches.

The Results

If you are looking to replace your car tyres, there are a few things you can do to find the size that is best for your vehicle.

First, check the sidewall of the tyre. This will have the manufacturer’s identifier and the size in millimetres.
Next, find a chart that shows the size by diameter for your make and model of vehicle.
Finally, measure the width of the wheel rim at its widest point. This will give you the inside width of the tyre.

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