It is sometimes not easy for many novice motorists to choose for their iron friend on their own. This is because their marking reflects a large number of parameters and characteristics. This article will discuss the methodology for deciphering the size of the disk and choosing it for the car.
Reading Characteristics
The entire line of parameters printed on the disk can be divided into several components. It might look something like this: 7jx16 H2 5x130 ET20 d74.1. To decipher the size of the disk, you need to consider each element in order.
It is worth noting that sometimes the location of the parameters in the string can change places and slightly differ in characters. But the general algorithm for decrypting the size of a disk on a car is always the same.
Width
Wheel width is in inches and comes first on the specification line. In fact, this is one of the determining parameters when choosing. Based on this value, the tire width will be selected in the future. Marking examples: 8.5 12, 9.5.
Experienced drivers claim that the greater width significantly affects the handling and dynamics of the car.
Edge design marker
Immediately after the number with the width of the disk, the letter value follows. As a rule, for a car enthusiast, it carries little information and is used mainly by service specialists. In most cases, it is marked with the letter J. But it can also be JJ, K, JK, B, P, D.
Disc diameter
In rim dimensions, the bead flange design symbol is followed by the numeric value of the diameter in inches. It is also one of the main parameters. Changing the diameter of the disk in a larger direction can also change the size of the tire used. And this, in turn, will have an impact on handling on the track. For example, on low-profile tires, all the bumps in the road will be clearly felt, and the entire load will fall on the shoulders of the suspension.
Hampas
Next in order is the designation of humps. These are protrusions along the edges, which allow you to more securely mount the tire. They can take the values H, H2, X. Here H is a regular hump, X is a truncated one. The coefficient after it is the number of sides on which the hump is located.
PCD
The next parameter in order is sometimes referred to as PCD. It is marked something like this: 5x130. The first digit in the entry shows the number of disk mounting bolts, and the second - the diameter on which they are located in millimeters. This is one of the most important parameters when deciphering disk sizes.
The values can vary within very small ranges, up to tenths of a millimeter. Therefore, if the characteristic is not matched exactly, there is a possibility that the bolts will not be able to fall into place. As a result, the fastener will not be tight. This means that you will then have to carry out frequent balancing and repairs.
Departure
This parameter consists of numbers and letters. Maybe so - ET20. In short, it means the distance between the plane of the disk and Can be negative and positive. The first option will visually make the disk more convex relative to the car. The second is deep.
A significant change in disc offset affects the steering axle offset, increases bearing wear and, in some cases, worsens handling. Auto manufacturers strictly regulate the size of the permissible departure and grossly violating it means hitting some parameters of the car, which may worsen.
Center hole diameter
It is measured in millimeters and is indicated by letters and numbers. For example, so - d85. When deciphering the size of the disk, you should pay special attention.
Extra options
When deciphering the size of disks, other characteristics can be used. For example, the maximum disk load. Passenger cars use discs with a margin of safety, which should be enough for its needs. But if it turns out that it will be moved to another type of equipment, for example, an SUV, then the nearest small hole can damage the disk.
The load is usually specified in pounds. To get kilograms from them, you need to divide the existing value by 2.2.
When deciphering the dimensions of alloy wheels and subsequent installation, it may not fit the car. This state is called the X factor. And it is connected with the fact that alloy wheels can be of the most diverse shapes, while fully complying with the declared and required dimensions. Therefore, in order to avoid buying an unsuitable model, it should first be installed on the car, at least for a couple of bolts and slightly scrolled. If nothing interferes, does not rest, then the disk is ideal for a car.
How to choose the right disk?
In addition to technical characteristics, aesthetic properties, as well as the method of manufacture, can affect the choice.
Appearance is chosen based on personal preferences. Some people like more needles, some like fewer petals.
It is also worth knowing that wheels are divided into two broad categories: steel and alloy wheels.
Steel or stamped are made from a sheet of metal, subsequently connected by welding. This approach can significantly reduce the cost of production. In addition, steel wheels are easier to repair and rebuild. Although this is required quite rarely, as they have good strength. On the other hand, the stamped approach generates inaccuracies in production, which promises problems with subsequent balancing. Also, the significant weight of steel increases the overall mass.
Alloy wheels are lightweight. The process of their production allows you to create a wide variety of shapes and designs. They cost a little more, but as a result, aesthetics and practicality take such discs far ahead.
The light-alloy look is also in turn divided into two categories: cast and forged. The first type has a granular structure, which makes the product fragile. This is a known problem with alloy wheels. With prolonged use on rough roads, they tend to split.
The forged disc has a fibrous structure, which gives it special plasticity and prevents the disc from forming chips and cracks. It is very difficult to deform or destroy it.
A small decryption example
It is worth disassembling the markings on a single product. For example, to decrypt the sizes of disks on Valdai. There is such a designation - 17x6 6x222.25 Et115 Dia160. Here the wheel diameter in inches comes first. It is followed by the width under which the tires are selected.
Then follows the number of bolts and the diameter on which they are placed. These are 6 and 222.25 respectively. Et115 is the disc offset. In this case, it means that it is 115 mm inward from the mounting plane. That is, the disk is convex.
Dia160 is the diameter of the central hole in millimeters.
Finally
Careful decoding when choosing them will allow you to accurately select the necessary parameters and not become a victim of an unreasonable purchase. Knowing about their characteristics will be useful not only for novice motorists, but also for more experienced ones.
It will take no more than a few minutes to find the required position.
How to use the catalog of rims by car brand?
The site has an online tool for quick selection of products of interest. The parameters of disks by car brand will be found after you specify in a step-by-step mode:
- The model of car;
- the year of its release;
- design differences or modification features.
Further, the system will automatically display information about the standard sizes of disks by car brand. You can see not only the factory equipment, but also see suitable replacement options (if any). Thanks to this, even a person who is poorly familiar with the features of the machine device will be able to purchase a suitable kit.
In any case, before purchasing, read the information on wheel sizes for the car model indicated in the service and operation instructions. If in doubt, consult with the specialists of the online store site or with the employees of the official dealership. Please remember that deviations are not acceptable and will result in either the inability to use the purchased product or driving safety issues.
You can pick up alloy wheels for the car online, purchase orders are also accepted by contact numbers.
When choosing car tires and wheels, the main and often the only factor is the compatibility of these components with a particular make and model of a car. Many motorists are familiar with technical specifications such as wheel settings or tire sizes. This, of course, is wonderful, because it allows you to very quickly select literally a few options on your own. However, there are quite a few such "advanced" motorists. There are far more of those who, for whatever reason, prefer not to go into such technical details about their cars.
It is for them, first of all, that the service is oriented, which allows you to automatically select car rims and tires according to the make and model of the car. User participation in this process is minimized and consists only in choosing from the available options, first the brand, and then the model and year of manufacture of the vehicle. After a few moments, the system will automatically select from thousands of tires and rims exactly those that exactly match the recommendations of car manufacturers.
This is extremely important, given the huge danger of using tires and wheels with unsuitable technical parameters. As a rule, such changes in the vehicle configuration are caused by the need to improve some of its driving characteristics or give it a more spectacular appearance. In real operation, such experiments end with a deterioration in controllability, damage to various suspension parts, an increase in fuel consumption, and a distortion of the current speed indicators. Some of these changes to the performance of the vehicle significantly reduce the level of safety, which is unacceptable.
That is why you should not neglect the recommendations of automakers, which are based on the results of engineering calculations that describe the operation of various components and parts of the car, primarily the suspension. At the same time, all the most important indicators of safety, controllability and comfort are taken as the basis, each of which is verified during full-scale tests or using computer simulation technologies.
An automated system for selecting rims and tires makes it possible to exclude such a development of events by offering, based on the data specified by the user, at least several options. This greatly simplifies and facilitates the choice, but, again, not for everyone. We recommend this category of motorists to contact the specialists of our company. They will provide more detailed information about a particular wheel or tire model, pointing out various nuances.
The need to buy rims can arise for various reasons. Firstly, the installation of new wheels may be required if the old ones are badly damaged and deformed after hitting a deep pothole at high speed. Secondly, the reason may be the desire of the car owner to update the exterior of his car, decorate it and give it a more presentable look.
Also, some motorists purchase additional sets of wheels for use with tires of the appropriate seasonality, so as not to spend extra money on tire services every year. Some wheels can be fitted with summer tires and others with winter tires. In this case, the driver, if necessary, can independently rearrange the wheels without visiting a tire shop.
In order to avoid difficulties when installing rims, it is necessary to choose the right size for them. If you do not know the exact size of the disks on your car, you should find out by studying the service book for the car. It should contain all the necessary parameters - the width and diameter of the rim, the amount of overhang, drilling characteristics and the diameter of the central hole. You can also consult with the employees of our online store - just tell them the make and model of the car, and the experts will select the wheels of the appropriate size.
If you are going buy wheels for a car, when choosing, pay special attention to the following characteristics:
- Departure. It is recommended to use wheels with offset, the value of which is the same as that indicated in the service book for the car. But if wheels with the desired offset are not available or the available options do not fit the design, you can select products in which this parameter differs by + - 5 mm (for a car under warranty) or + - 15 mm (for non-warranty cars). ).
- Hub hole diameter. As in the previous case, you can, if necessary, buy wheels in which the size of the hub hole exceeds the standard for your car. But when installing such wheels, you will need additional devices - centering rings. With their help, you can install on auto disks in which the diameter of the hub holes is larger than that of regular ones.
- Rim diameter. If you are not willing or able order discs of the diameter recommended by the manufacturer of your car, you can choose wheels one size larger or smaller (for example, R13 or R15 instead of the standard R14). It is important that the wheels fit in all other characteristics - in particular, in terms of drilling parameters. It should be borne in mind that the use of rims of a "non-native" diameter leads to a slight distortion of the speedometer and odometer readings. Also, too large wheels can touch the wheel arches when the car body sags in pits, bumps, or during sharp turns when the car rolls.
- Drilling. The drilling parameters on the new wheels must necessarily match those of the standard wheels on your car. Otherwise, you simply will not be able to install new rims. It is also worth considering that in some models of disks double drilling is provided. This allows you to use one set of wheels on two different cars. For example, 5x100/108 drilled discs are suitable for cars that use wheels with both 5x100 and 5x108 parameters.
Our range
We can cheap buy wheels two main types - cast and stamped. Each type of wheel has its own advantages and disadvantages:
- Alloy wheels look more aesthetic and stylish. They weigh less than stamped ones because they are made of light alloy materials. Such wheels give the car a presentable look and do not require the use of decorative caps. But you need to remember that alloy wheels cannot be repaired and can burst with strong impacts, while stamped ones only deform under the same conditions.
- Buy stamped wheels can be much cheaper than cast ones. In terms of aesthetic properties, such discs are noticeably inferior to light-alloy ones, but they are more resistant to shock loads and are easily restored after damage. They are often used as winter wheel sets, since steel is more resistant to severe frosts than light alloy materials (which become more sensitive to shock).
Order discs (cast or stamped) right now. To do this, enter the required wheel parameters (offset, hub hole diameter, drilling type, etc.) in the search filter fields, and only those models that are suitable for your car will remain on the page. After that, move the selected product to the "Cart" and create an online order. All details can be discussed with our consultants by calling the phone number listed on the website.
Using the tire calculator, you can easily calculate how the outer dimensions of the wheel, ride height (clearance), speedometer readings and other characteristics will change when you install tires with a different size on your car. The calculator calculates all tire sizes in millimeters, and the vehicle speed in km / h.
Also, the calculator will help you calculate the required rim width for a specific tire size.
How to use the tire calculator:
First enter the standard size installed on your car, and then the one you want to install and click "calculate". The table on the right will show the results of the calculator's calculations.
Detailed information about tire marking in the section: tire marking.
We recommend that you install only the factory tire sizes that are listed in the owner's manual for your machine. Installation of non-standard sizes may void your dealer's warranty and may affect vehicle performance and handling.
Tire calculator for European tires
Old size:
new size:
145 155 165 175 185 195 205 215 225 235 245 255 265 275 285 295 305 315 325
/ 25 30 35 40 45 50 55 60 65 70 75 80 85
12 13 14 15 16 17 18 19 20 21 22 23 24
Found in catalogue:
175/70R13-
175/70R13-
When recalculating tire sizes on a calculator, it should be borne in mind that:
With an increase in the diameter of the rim (and, as a result, a decrease in the height of the tire profile so that the outer diameter of the wheel remains unchanged), the load on the car suspension increases, as well as comfort worsens (the car will become noticeably stiffer).
With an excessive increase in the tire profile, the car becomes a “roll”, it is worse controlled, and at critical values \u200b\u200bof the profile height, the tire may begin to cling to body parts and suspension of the car, which will subsequently lead to its destruction.
