4x98 Bolt Pattern
A bolt pattern, or lug pattern, is a parameter that defines the number of lug holes in the wheel and the diameter of the circle (PCD, Pitch Circle Diameter) that the lug holes form. 4x98 bolt pattern, or 4x3.86 when converted to inches, indicates the wheel has 4 lug holes spaced evenly on a circle with a diameter of 98 millimeters or 3.86 inches. The 4x98 bolt pattern is common to Fiat and Yugo models.
The 4x98 bolt pattern is a specific configuration used in the automotive industry to secure wheels to vehicles. This pattern has four bolt holes arranged in a circle, with the diameter of that circle being 98 millimeters. This measurement is key to ensuring that the wheel fits perfectly onto the vehicle's hub, maintaining proper alignment and balance for safe and efficient driving. The 4x98 bolt pattern is predominantly found in smaller cars, particularly those manufactured by European brands such as Fiat, Alfa Romeo, and some models of Lancia. Choosing the correct bolt pattern is crucial when replacing or upgrading wheels, as an incorrect fit can lead to numerous safety issues, including wheel detachment or uneven tire wear. It’s also important for vehicle owners to be aware of this specification when looking into customizations or modifications for their vehicles, ensuring compatibility and avoiding potentially costly mistakes.
Similar 4-Lug Patterns
Here are similar 4-lug patterns that can be used as an alternative to 5x114.3 bolt pattern.
| Bolt Pattern | Number of Lugs | PCD (mm) |
|---|---|---|
| 4x100 (4x3.94) | 4 | 100 |
| 4x101 (4x3.98) | 4 | 101 |
| 4x108 (4x4.25) | 4 | 108 |
| 4x114.3 (4x4.5) | 4 | 114.3 |
| 4x140 (4x5.51) | 4 | 140 |
4-Lug Pattern Torque Sequence
The lug bolt pattern torque sequence is a critical procedure designed to ensure that the wheel is mounted securely and uniformly on the vehicle's hub, preventing potential issues such as wheel vibration or hub damage. This sequence varies slightly depending on the number of lug bolts but always follows a pattern that promotes even distribution of force. When tightening lug nuts or bolts on a wheel with a 4-lug pattern, follow the torque sequence shown below to ensure even and secure tightening. The process usually involves multiple passes: initially tightening bolts to a lower torque setting to seat the wheel properly, followed by final tightening to the manufacturer's recommended torque specification using a calibrated torque wrench. Adhering to this sequence and using the correct torque ensures the wheel is balanced and securely attached, reducing the risk of brake rotor warping and ensuring the safety of the vehicle.
Vehicles with 4-Lug Wheel Bolt Pattern
There are 3 vehicle models that have 4x98 bolt pattern. Select vehicle model for additional information.
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