Buying a new one steering-braid It often turns into a lottery if you don’t know the exact parameters of your steering wheel. Accessories manufacturers use different marking systems, and diameter standards range from compact urban minicars to heavy SUVs. An error in choosing the size will cause the case to either not fit or will hang around, creating an emergency situation on the road.
To avoid disappointment and loss of time for the return of goods, it is necessary to conduct competent measurements. In this article, we will analyze all the nuances: from the use of simple roulette to decrypting factory codes. You'll learn to define rim-diameter with millimeter accuracy, which guarantees the perfect fit of the purchased accessory.
Do not rely on visual assessment or advice of friends who own similar models of cars. Even within a single model range Toyota Camry or BMW 3 Series Series The thickness of the rim may vary depending on the year of release and configuration. Accurate measurement is the only way to get a result that will please the eye and provide comfortable control.
Standard steering wheel dimensions
The global automotive industry has developed several well-established standards covering 95% of all passenger cars. Understanding this classification will help you cut off the wrong options right away and focus on the right segment. Most braids are marked with Latin letters from S to XL, which corresponds to a certain range of diameters.
The most common size is the M category, which is suitable for most modern sedans and hatchbacks. However, owners of commercial vehicles or retro cars may face non-standard dimensions. It is important to consider not only the outer diameter, but also the thickness of the rim itself, as it affects ergonomics.
Below is a detailed table of conformity of markings and actual dimensions. Save it to quickly navigate the range of stores.
| Marking | Diameter (cm) | Diameter (inches) | Type of car |
|---|---|---|---|
| S | 35-37 | 13.5-14.5 | Small Cars (Daewoo Matiz, Kia Picanto) |
| M | 37-39 | 15-15.5 | Ford Focus (Hyundai Solaris) |
| L | 39-41 | 15.5-16 | Business Class, Crossovers (Toyota Camry, Kia Sportage) |
| XL | 41-43 | 16-17 | Automobiles and minibuses (Toyota Land Cruiser, Ford Transit) |
Note that some sports paraphernalia manufacturers may use their own size grid. In such cases, it is better to focus on centimeters, rather than letter designations. Measurement accuracy It's a crucial part of this.
Instruments for accurate measurement
You will not need complex diagnostic equipment for the procedure. Simple tools are enough, which are found in the garage or toolbox of every home craftsman. The main thing is to ensure sufficient lighting and access to the steering wheel.
The ideal tool is a flexible tailor tape-centimeter, which allows you to measure the circumference without removing the steering wheel. If there is no such tape, you can use construction roulette, but you need to work with it carefully so as not to scratch the plastic or skin.
☑️ Preparation for measurements
In extreme cases, if there are no measuring devices at hand, you can use a long lace, rope or even a charger wire from the phone. After the rudder is circled, the contact point of the ends of the cord is marked with a marker, and then the resulting segment is measured by a ruler. This method is less accurate, but gives an acceptable result for selection. braid.
⚠️ Warning: Never use sharp objects such as a knife or a stitch to take marks on a lace if you hold it directly above the steering wheel. One awkward movement can damage the expensive leather steering wheel trim or injure the airbag.
Method of measuring diameter without removing the steering wheel
The most common question is: how to measure the size of the steering wheel under the braid without dismantling it? The answer is simple: measure the length of the circle. This method eliminates errors associated with centering, and allows you to get the data necessary to buy a case in the store.
Take a flexible tape and apply its zero mark to the inside of the rim. Wrap the tape around the outer part of the steering wheel, following the center of the thickness of the rim. It is important that the tape does not slip on the spokes and fits snugly to the surface along the entire length.
After a full turn, write down the value obtained. This is the circumference length that most often requires sellers to specify when ordering individual covers. To convert to diameter (if necessary), divide the resulting number by 3.14.
If you use a string instead of a roulette, make sure it doesn’t stretch. It is best to fold the string in half to eliminate stretching, and measure half the length, multiplying the result by two.
Repeat the procedure 2-3 times to make sure the readings are correct. The range of 0.5-1 cm is allowed, because braiding They have a stretch margin. If you are planning to buy a hard frame case, the accuracy should be maximum.
Measuring rim thickness of steering wheel
Many forget that the braid should fit not only in diameter, but also in the thickness of the girth. Too narrow cover will press on the fingers, and too wide will make the steering wheel a "donut", with which it is difficult to perform rapid maneuvers. This parameter is especially important for owners of cars with thickened sports steering wheels.
To measure the thickness, palm around the steering wheel in the place where your hands usually lie (most often these are the positions "10 and 2" or "9 and 3"). Think about whether you are comfortable or if your fingers are too tight. A more accurate method is the use of a barbell, but you can do with a conventional ruler.
Apply the ruler to the top point of the rim and visually estimate the distance to the bottom point, trying to look strictly perpendicular. The standard thickness of the rim of passenger cars is from 25 to 35 mm. Thickened steering wheels can reach 40 mm or more.
Why is thickness important for safety?
Too thick a steering wheel in the braid can lead to the fact that you will not be able to close your fingers around it. In an emergency, this reduces control of the vehicle and increases reaction time. In addition, thick braids often have a ribbed surface, which, if the size is not selected correctly, will rub the palms on long trips.
If you choose an eco-leather braid with an internal pad, consider that it will add another 3-5 mm to the overall thickness. Ergonomics of management It depends on the right combination of diameter and thickness.
Size determination by car model
If you don’t have tools at hand, you can try to find information in the technical specifications of your car. But there are a lot of nuances here. The same model range can be equipped with different steering wheels depending on the market and year of release.
For example, the American versions Ford Mustang or Chevrolet Camaro They often have a thinner rim than their European counterparts. Japanese subcars, like, Honda Fit or Suzuki Swift can be equipped with steering wheels of reduced diameter to improve maneuverability in the city.
Search information should be conducted by VIN-code on specialized forums or in spare parts catalogs. Enter the query "size steering wheel [model car] [year]" and compare the data. Often owners share their experience of installing specific braid models, indicating whether they fit or not.
⚠️ Do not blindly trust the catalogs of department stores, where it says "suitable for 95% of cars". This phrase is a marketing ploy. Always check the declared diameter range with the actual parameters of your machine.
Factory plates on the steering wheel itself (if they are preserved under the linings) can also contain codes, deciphering which, you can find out the original size. However, this method requires a deep dive into the manufacturer's technical documentation.
Features of measurement for non-standard steering wheels
Owners of customized cars or retro cars face additional difficulties. Rudders of the "bucket" type, three-spoke sports models or wooden rims on the classics have a unique geometry. Standard measurement methods here can give an error.
If the steering wheel has a pronounced oval or rectangular shape (as on some trucks or old ones) GAZA and zil), measure the widest part. For braids in such cases, it is better to use models on the tiers or with an elastic internal frame that can adapt to the shape.
If there are protruding multimedia control buttons or gear shift petals, measurement should be made, bypassing these elements. The braid should not overlap the functionality or create pressure on the buttons, which can lead to their spontaneous pressing.
For rudders of a complex shape and with protruding elements, braids-capes on tiers or models that require stretching (stitching), as ready-made stretch covers may not sit on the figure, are best suited.
In the case of carbon-fibre insert or alcantara, make sure that the braid material will not chemically react or scratch the delicate surface when frictioned. Sometimes it makes sense to turn to professionals for tailoring an individual case.
Frequent mistakes in choosing a slap
The most common mistake is to buy a braid "by eye" or "to be." As a result, the driver gets a comfort disc that is constantly scrolling or, conversely, clamping the blood flow in the hands. It's not only uncomfortable, it's dangerous.
The second common mistake is ignoring seasonality. Summer braid from the grid in winter will chill your hands, and winter fur in summer will create a “greenhouse effect”. Universal all-season options from high-quality eco-skin with perforation are the golden mean.
Many people also forget to check for an anti-slip inner layer. Cheap models can slide on a plastic or sleek leather steering wheel, which at a critical moment can lead to loss of control. Always check the interior surface before buying.
Can you pull a larger sized slap?
Technically, some elastic models can be pulled with effort using a soap solution or a dryer to warm up. However, this does not guarantee a tight landing. Over time, this braid will stretch even more and begin to hang out. Better buy a size.
Does the sleeve affect the operation of the heated steering wheel?
Yeah, it's a big deal. A thick braid (more than 5 mm) will work as a thermal insulator, and you will feel warm for much longer. Thin models made of natural leather or thin eco-skin pass heat best.
How to take measurements if the steering wheel flattens?
If the steering wheel is deformed (flattened from above and below), measure the circumference length along the outer edge, bending the irregularities. For such steering wheels, rigid frame braids are categorically not suitable - only soft capes.
Do I need to remove the old cover before measuring?
I will. Measurements are made only on the "naked" steering wheel. If you measure on top of an old braid, you get the wrong data and the new thing just won't fit in or will sit too loose.
What if I am between the size of S and M?
Always choose a smaller size if the material is elastic (leather, eco-leather). It will be extended during installation and operation. If you take a larger size, you can't squeeze it anymore, and the braid will hang around.