Owners Skoda Octavia A7The 2018 model is often faced with the need to replace wheels, whether it is a seasonal change of tires or an upgrade to the appearance of the car. Incorrectly selected parameters can lead to serious safety problems, vibrations on the steering wheel and even to spinning the wheel while driving. A key factor in choosing new cast or stamped discs is accurate knowledge of the factory characteristics of the suspension.
The peculiarity of the 2018 model is that it can have different suspension settings depending on the configuration and sales market, which affects some mounting parameters. You need to carefully study the labeling on old drives or refer to the technical documentation to avoid mistakes when buying. We will analyze all the nuances that will help you find the ideal option.
Basic bolt pattern parameters and fastening geometry
For Skoda Octavia A7 In 2018, the main parameter determining the compatibility of the disc with the hub is the bolt pattern or PCD (Pitch Circle Diameter). In the vast majority of cases, the standard is used for this model. 5x112. This means that there are 5 fastening holes on the disk, the diameter of the circle passing through their centers is 112 mm. This parameter is critical for installation.
In addition to the number of holes, it is important to consider the diameter of the central hole (CO). For Octavia A7, this figure is 57.1 mm. If you purchase discs from other brands (for example, from the Audi or Volkswagen), they may have the same PCD but a larger CO diameter. In such a situation, it is necessary to use centring rings to avoid the wheel beating.
- π§ Standard bolt pattern:
5x112 - π Center hole diameter:
57.1 mm - π Number of mounting holes:
5.
Do not confuse the parameters with earlier models or younger versions of Skoda, where you can find a 5x100 bolt pattern. An error in the choice will lead to the fact that the disk simply does not fit on the hub or will not hold tightly. Always check the labeling on the inside of the drive before buying.
- Alloy wheels
- Steel stamped
- Carbon discs
- Tuning forged
Dimensions of bolts and fastening nuts
After you have convinced of the correctness of the disk geometry, you need to pay attention to the fastener. For Octavia A7 threaded bolts or nuts are used M12x1.5. The length of the threaded part and the shape of the head also matter, as they must enter the disk seat correctly and press it tightly against the hub.
Factory fasteners usually have a conical shape of the saddle (an angle of 60 degrees), which provides reliable fixation. When replacing disks with aftermarket analogs, bolts themselves are often required to be replaced, since new disks may have a different seat geometry. Use only certified fasteners that meet the standard M12x1.5.
- βοΈ Thread type:
M12x1.5 - π© Saddle Shape:
60Β° cone - π Standard key size:
17 mmor19 mm(depending on the type of bolt)
It is important to consider the time of the puff. Excessive force can lead to a failure of the thread or deformation of the disk, and insufficient - to weaken the attachment. Recommended time of tightening for Skoda Octavia A7 amounts to 120 Nm. Use a torque wrench for fine tuning.
β οΈ Attention! Never use a pneumonist for the final tightening of wheel bolts. This often leads to disc skewing and thread failure. Always roll the bolts manually with a dynamometer key to the value
120 Nm.
Offset parameters and wheel width
Wheel offset (ET) is the distance from the landing plane of the disk to the central line of the disk. For Skoda Octavia A7 2018 factory departure varies in the range of ET 35 up to ET 50. Deviation from these values can radically change the behavior of the car on the road and the load on the suspension.
When selecting discs with a smaller offset (e.g. ET 30), the wheel will project outside the arch, which may require installing pads or changing the width of the arch. Increased offset (ET 60) will cause the wheel to rest in the suspension elements or brake caliper. Disk width also plays a role: standard values are 6.5J up to 7.5J.
| Parameter | Value (min/max) | Standard value |
|---|---|---|
| offset (ET) | 35 - 50 | 45 |
| Rim Width (J) | 6.5 - 7.5 | 7.0 |
| Disc diameter (R) | 16 - 18 | 17 |
| Bolt Pattern (PCD) | 5x112 | 5x112 |
If you are planning to install wide tires or rims with an aggressive design, be sure to check if they will not touch the wings when the steering wheel is turned. Some owners install ET 40 drives for a sportier look, but this requires careful inspection.
βοΈ Checking disk compatibility
Compatible with other VAG models
Volkswagen Group vehicles often have unified platforms, making it easier to find spare parts. Skoda Octavia A7 The 2018 MQB is built on the platform, making it compatible with a number of other models. However, there are nuances that cannot be ignored.
Discs from Volkswagen Golf 7, Audi A3 and Seat Leon III generation is often suitable for PCD 5x112 and CO 57.1 mm. It is important to note that some models Audi The central hole may be larger (e.g. 57.1 mm too, but there are sometimes options with different fastener requirements). Always check the donorβs specific model.
- β Full compatibility: VW Golf 7, Seat Leon
- β οΈ Checking is required: Audi A3, Skoda Superb
- β Not suitable: Skoda Rapid, VW Polo (5x100 slurring)
Features of installation of disks from Audi
Audi drives often have more expensive bolts and can differ in the shape of the saddle. When installed on Skoda, it is recommended to use the original Skoda bolts or universal ones with the right cone angle.
Using non-original discs from other VAG brands can be a profitable solution, but requires careful selection. Make sure the brake calipers donβt touch the spokes of the disc when braking, especially if you have a version with large brakes.
Typical mistakes when selecting wheels
One of the most common mistakes is to ignore the size of the central hole. Many owners believe that if the bolt pattern matches, the disc will fit. That's a misconception. If the CO is greater than 57.1 mm, the disc will hang on the hub, which will cause strong vibration and accelerate wear of the bearings.
Another common mistake is using parecks without taking into account the offset change. Installation of pads with a thickness of 10 mm reduces the effective flight by the same 10 mm. If you put discs with ET 45 and spacers of 10 mm, the final offset will be 35, which is permissible, but the load on the hub bearing will increase.
β οΈ Attention! Installation of pads thicker than 10 mm without replacing bolts with elongated ones can lead to the fact that the bolt will not provide reliable fastening. The length of engagement of the thread should be at least 1.5 diameter of the thread.
It is also worth paying attention to the shape of the bolts. If you bought discs with a spherical saddle, and you have bolts with a conical one, the contact will be point-based, which will lead to self-unwinding. Use only bolts that match the shape of the saddle of your new drive.
Before buying new discs, measure the distance from the edge of the brake caliper to the edge of the old disc. This will help you to see if a new disc with wide spokes will stand up.
Seasonal characteristics and storage
When changing seasonal tires, it is important to properly label the discs to avoid confusion. For Skoda Octavia A7 In 2018, different tire sizes are often used for summer and winter sets. For example, summer tires can be used for 215/45 R17And wintertime. 205/55 R16. Both options are compatible with the same slurring.
Keep the discs in a dry place, away from direct sunlight and heat sources. Cast discs are particularly sensitive to temperature changes if they have cracks or chips. Check the condition of the fasteners regularly, as over time the thread may become contaminated or oxidized.
- π In winter, use chains or spikes if permitted in your area.
- βοΈ In summer, check the tire pressure at least once a month.
- π‘οΈ Clean the bolts of dirt and rust at each change of season.
The correct selection of discs is not only aesthetics, but also safety. Errors in offset or CO settings can cost you health and money to repair the suspension.
Frequently Asked Questions
Can I put 5x100 discs on Octavia A7?
No, this is not possible without the use of transition rings, which reduce safety. The Octavia A7 is standard 5x112, and using 5x100 will make it impossible to fasten the wheel.
Do I need to change bolts when changing discs?
If the new discs have a different shape of the seat under the bolt (cone or sphere), then yes, the bolts need to be replaced. It is also recommended to change the bolts if they are damaged or have signs of corrosion.
What is the maximum disk size you can set for Octavia A7 2018?
Factory recommendations are usually limited to the diameter of R18. R19 or R20 is possible, but will require low-profile rubber and may impair ride comfort. Check the arch gaps.
What to do if the disc is not centered on the hub?
If the diameter of the central opening of the disc is greater than 57.1 mm, it is necessary to install centring rings. If the hole is smaller, the disc simply will not fit on the hub, and you will have to look for another disk.
Does the bolt pattern affect the performance of ABS and ESP?
the bolt pattern itself does not affect the electronics, but if the disc is installed incorrectly and a beat occurs, the speed sensors can give out erroneous signals, which will trigger the stabilization systems.