About wheel bolts: models with eccentric, for VAZ cars

Types of fasteners

Here are the types of fasteners needed for alloy wheels:

1. Bolts are metal rods with a screw thread at the end. Used to connect detachable elements.
2. Nuts are round-shaped parts designed to fasten elements by screwing a metal die onto threaded rods.

Steel, aluminum or titanium alloys are used to produce products.

Titanium bolts are distinguished by high quality indicators. Black bolts for alloy wheels are made from steel with the addition of molybdenum or steel with a chrome or nickel coating.

Characteristics of bolts and nuts

Bolts and nuts differ in design features, so the choice is determined by the type of disk. The stamped disc is made from a durable type of steel. Moreover, it has a small thickness at the point of attachment to the central part of the rotating part. For an optimal connection, the bolt and nut must have a flat surface. The composition of cast wheels includes relatively light alloys. They have reduced reliability characteristics. The fastening system of the products is made in the form of a cone.

Main differences

Wheel nuts and bolts for fastening alloy wheels have a special design. For example, if stamped ones are made of high-strength steel, then the mounting point is small in thickness. Therefore, products with a smooth cylindrical surface are used for them. To make the connection reliable, one flat cap is enough.

Alloy wheels are made from lighter alloys, so they are much less reliable. The contact surface between the seat and the bolt appears cone-shaped. It is much larger than the size of the flat head used in fastening stamping disks.

How to measure yourself

Measurements must be as accurate as possible, since the indicators differ in close values ​​with a distance of a couple of millimeters, for example, 98 and 100 or 110 and 112, and they are not interchangeable. To eliminate errors, it is recommended to use a caliper or ruler.

Adjacent holes

Here's how to determine the distance between bolt holes. The dimensions of the circle on which the holes are located are taken. The diameter is determined using compatibility tables or by measuring using a ruler. The resulting distance between adjacent fasteners should be multiplied by a factor that depends on the number of holes. The circumference of a VAZ is 9.8 cm, and that of passenger cars is 139.7 millimeters.

Far holes

A simple measurement method is carried out on models with an even number of recesses - for 4, 6, 8 fasteners. Parallel Hole Distance – PCD.

And here’s how the far holes of disks with five bolts are measured: the calculation is made between non-adjacent recesses, the resulting figure should be multiplied by 1.051.

Hub window diameter

Indicative data for the central hub window are indicated in the table and in the complete bolt pattern formula. In the absence of information, readings are measured with a ruler or caliper. The diameter of the hub area on the VAZ 2110 = 58.6 mm.

The bolt pattern is carried out taking into account the relative size of the vertical axis of symmetry of the disk to the area adjacent to the hub.

Other parameters of VAZ 2115:

Thread M14 x 1.5 means:

M14 – thread diameter 14 (mm); 1.5 — thread pitch (distance between adjacent threads).

Caution: the above data are the official figures of the manufacturer, however, please note that the information is for reference only and does not guarantee absolute accuracy.

Full and abbreviated bolt pattern formula

Manufacturers provide detailed wording that reflects all important meanings. Motorists use abbreviations that do not fully describe the product.

Abbreviated

PCD (Pitch Circle Diameter) is a short formulation that includes two parameters. It is indicated: 4×98 – wheel bolt pattern on a VAZ-2110. The number of four indicates the number of bolt recesses. The number 98 was obtained as a result of the transverse method of measuring their circumference.

Full

Let's look at an example: the full bolt pattern formula is indicated on the rim: 7.5 J×15 H2 5×100 ET 40 D 54.1.

Decoding of alphanumeric groups means:

• 5 JX 15 – rim width 7.5 inches and diameter 15 inches;
• X – indicates that the disc is made by casting or forging;
• J – it is recommended to use the product on single-wheel drive vehicles;
• JJ – marking of all-wheel drive models;
• H2 – the number of protrusions that secure the tires. Models with one protrusion - H1. Absence of protrusions - marking AN;
• Hump ​​- indicates high-quality rubber retention; this feature eliminates depressurization.

Consequences from another bolt pattern

Using inappropriate bolts is a safety hazard. When a bolt pattern occurs, an axial displacement of the entire wheel relative to the hub occurs. At high speeds, the wheel spins unevenly, the car will shake, which is accompanied by a beating in the steering wheel.

When installing wheels, car enthusiasts often encounter such a problem as a discrepancy in the diameter of the fasteners. In this case, eccentric bolts with a movable conical part are suitable, which will eliminate discrepancies in size.

Removing the front wheel hub

Now you need to remove the hub. To do this you will need:

1. Mark the position of the hub on the strut using a marker. Be sure to clean the surface thoroughly before doing this.
2. Using keys “17” and “19”, unscrew the nuts from the bolts securing the hub to the shock absorber strut.
3. Using a “17” wrench, you need to unscrew the lower bolts securing the ball joint to the hub. This is a simple option when you do not need to replace the ball. But if you need to change it, then you need to use a “19” key to unscrew the nut from the ball pin and remove it using a puller.
4. Completely unscrew the hub nut.
5. Carefully push the front wheel hub off the CV joint.

That's all, now you need to completely disassemble the element and remove the front wheel hub bearing of the VAZ-2108.

How to choose wheel fasteners

The entire line of bolts and nuts is spherical or conical in shape. The characteristics of the connection are determined by the softness of the metal of the cast disk, which leads to an increase in the contact area of ​​the disk and the fastener.

The thickness of alloy wheels is greater than the thickness of steel products, for this reason it is better to use extended bolts. Due to the softness of metal products, it is necessary to periodically inspect the tightening of the fastening system.

Eccentrics

Standard fasteners have a hexagon shape, a threaded part and a conical clamping part. A unique characteristic of disc eccentric bolts is their floating cone with an offset center of gravity.

The axial distance between holes may vary. The standards for this PCD indicator are varied and not always fully thought out. The result is vibration while driving. This makes it more likely that bearings, levers and rubber bands will fail faster. For such cases, the ideal solution would be to use eccentrics. Thanks to the movable cone, a gap is formed between the inner and outer diameters.

Tightening fasteners on alloy wheels

Before installing the bolts into the mounting recesses, it is recommended to treat the hardware with graphite lubricant. As a result, when it comes into contact with the disk, the head of the bolt or nut will rotate and make full contact. This will prevent blocking during starting power due to friction between the disc and the mounting system. Bolts are produced that compensate for minimal deviations in fastener dimensions. A loose connection will lead to cyclical failures in the fastening system; the bolts and nuts will begin to unscrew themselves.

Bearing removal

To remove the bearing from the seat, you will need a puller. You can even make it yourself, there are no scarce components, the design is very simple. The VAZ-2108 front wheel bearing puller is a long bolt with a coarse thread and a nut. And most importantly - spacers and mandrels with a diameter similar to that of a wheel bearing. If there is no such puller, then all the work can be done with a hammer, but there must still be a mandrel.

First of all, remove the hub itself, in which the holes are made for attaching the wheels. Next, you need to use pliers to remove the retaining rings. If you don’t have such a tool, you can use a flat-head screwdriver, pliers and an awl. After removing the rings, you can begin pressing out the bearing. If you do this with a hammer, then try to hit accurately and sharply, this way the bearing will come out faster.

Locking bolts for alloy wheels

Secret bolts for alloy wheels are another subtype. If you install locks, car tires will be protected from theft. You won't be able to remove the wheel with a regular wrench. To unwind the secrets, you will need a key that comes with them in one set.

When selecting fasteners for wheels, you should remember that cast products are relatively thick. Accordingly, longer bolts are selected for them than for stamped discs.

Car wheels perform not only basic operational functions. It’s hard to imagine the stylish appearance of a vehicle without well-groomed and pleasing wheels. The choice of products on which tires will be installed must take into account a number of factors.

Tuning decisions should in no way be made to the detriment of the technical characteristics of the car. The selection of wheels for a VAZ-2107 will be successful if you take into account a number of technological and design features of the model.

ATTENTION! A completely simple way to reduce fuel consumption has been found! Don't believe me? An auto mechanic with 15 years of experience also didn’t believe it until he tried it. And now he saves 35,000 rubles a year on gasoline! Read more"

Throughout the entire period of mass production, the VAZ 2107 was equipped with stamped wheels with a diameter of 13 inches (R13) for standard 175//70 R13 tires. Export versions, as an exception, were equipped with light alloy models of the same size.

In addition to diameter, there are a number of other parameters of car rims:

• width;
• bolt pattern;
• departure;
• centering hole.

The standard rim width of the VAZ-2107 of various models ranges from 5 to 5.5 inches. This size is of great importance for the directional stability of the car; the coefficient of adhesion to the road surface depends on it. Symbol: 5.0J or 5.5J.

The bolt pattern in production models is indicated by the symbols 4x98, where 4 is the number of holes for mounting bolts, 98 is the diameter in millimeters of the circle on which they are located. To put it simply, 98 mm is the distance between the central axes of opposite holes. Novice car enthusiasts underestimate another important parameter. The diameter of the hole itself affects the reliability of fastening the wheel to the hub; it must be taken into account when choosing mounting bolts.

Overhang is the distance between the plane of contact of the disk with the hub and the plane that conventionally cuts the rim in the center. There are positive and negative offsets. In the first case, the wheel is recessed into the arch, in the second it is moved towards its outer boundary or even protrudes beyond it. The standard offset of VAZ-2107 wheels is positive and amounts to 29 mm (ET29).

The centering hole for production models is marked with DIA 58.5. The numbers indicate the hub diameter in millimeters. The value of this parameter is important when choosing new disks; if the centering values ​​do not match, a special sealing ring is additionally purchased. The tightness of the fit of the central hole of the disk to the hub is a determining factor; the correct operation of the tires and the absence of “runout” of the wheel depend on it.

Method of calculations

Based on the tire characteristics of a standard 175/70 wheel with a radius of R13, where:

• values ​​175 and 70 are the values ​​of the tire width and rubber profile height in percent;
• multiplying 175x0.7 together gives 122.5 mm;
• the actual diameter of the R13 disk is 13x25.39 will be 330 mm.

To find out the total diameter of the wheel, you need to add the two obtained values, but the profile height comes in double size, i.e. (122.5x2) is added to 330 and the result is 575 mm.

Calculations are carried out using the same principle for a more visual perception, for example: for models 175/70R13, 175/65R14 and 185/60R14, it comes out to 575, 583 and 577 mm, respectively.

The last value will be most suitable for the VAZ-2109, since it is 10 mm larger in width. This will reduce the braking distance during operation, add controllability, and reduce tire bending when cornering at high speed. Fuel consumption will increase slightly, but potholes and potholes on the road will become less noticeable.

Freelance options

VAZ-2107 cars are equipped with stamping, which has certain advantages and disadvantages. Stamped discs serve for a long time and reliably, bend and do not burst upon impact, and can be easily repaired even at home. Such models are easy to use, affordable, and do not attract the attention of intruders. However, the relatively large weight increases fuel consumption, makes acceleration and braking difficult, and creates inconvenience during installation and dismantling.

Innovative light alloy models are divided into 3 categories based on their manufacturing method:

Cast ones are made from alloys based on aluminum or magnesium, which allows them to reduce their weight by a third compared to standard versions. The fragility and inelasticity of the material upon impact leads to chips or even bursting of the wheel.

Forged products are distinguished by increased strength and lower density due to hot stamping technology. Deformation requires a lot of force, but the inflexibility of the material forces the suspension to take on the full force of impacts when driving on a bad road.

Prefabricated ones consist of 2-3 segments fastened with bolts. You need to pay special attention to the fastening material. Steel bolts rust quickly, titanium bolts do not corrode. Components can be manufactured using different methods and from different materials. This technological solution makes it possible to reduce weight, increase the interchangeability of parts and the maintainability of products.

Selection principles

The selection of wheels is made taking into account the design features of the vehicle and operating conditions, assessing the impact of many factors.

The VAZ-2107 on 14 wheels looks more attractive than the standard version, but it must be taken into account that a new light-alloy version will lead to additional financial costs due to a change in tire size.

A car with 15 rims looks beautiful, but requires the use of low-profile tires, otherwise the tires will rub against the wheel arch protection. Operation in off-road conditions, maximum loading of the trunk with this option is fraught with negative consequences.

Wide wheels with a long offset increase stability, but tend to heavily pollute the car in bad weather conditions. The large curb weight of the car leads to friction between the tires and the fender liners.

The selection of accessories is carried out taking into account the correspondence of the parameters of the tires used to the standard sizes of the wheels. Dimensions of 13 inches exclude the use of wide-profile tires due to the small volume of the wheel arch.

Choosing non-standard wheels means replacing car tires. It is necessary to take into account the acceptable tire sizes for the VAZ-2107 recommended by experts:

• diameter 13-15 inches;
• width 165-185 mm;
• tire profile – 55-80%.

Bearing sizes

The article contains a photo of the VAZ-2108 front wheel bearings, as well as a drawing of a puller indicating all dimensions. Therefore, if you are in doubt whether you purchased the right roller, check the dimensions of the hub. The part number is 256907.

1. The outer diameter of the holder is 64 mm.
2. Inner diameter – 34 mm.
3. Weight – 445 g.
4. Balls with a diameter of 9.525 mm are installed inside.
5. The total number of balls is 28.
6. The unit is designed to operate at rotation speeds above 6000 rpm.

In any car store, salespeople will be able to advise you on the best quality product.