Hjulfälg

Hjulfälg, commonly referred to as a rim, is the outer metal component of a vehicle's wheel that attaches to the tire. It is a crucial part of the wheel assembly, providing the structural support and sealing surface for the tire. The hjulfälg is typically made of steel or aluminum alloy. Steel rims are generally more robust and less expensive, often found on base model vehicles or commercial trucks. Aluminum alloy rims are lighter, offer better heat dissipation, and are often chosen for their aesthetic appeal and performance benefits, contributing to improved handling and fuel efficiency due to reduced unsprung weight.

The diameter and width of a hjulfälg are specified by the vehicle manufacturer to match the tire size and load requirements. Bolt pattern, also known as lug pattern, refers to the arrangement and number of holes on the rim used to mount it to the vehicle's hub. Common bolt patterns include 4x100, 5x112, and 5x120, indicating the number of bolts and the diameter of the bolt circle in millimeters. The offset of a hjulfälg is the distance from the mounting surface of the wheel to the centerline of the rim, affecting how the wheel sits in relation to the vehicle's fender. Proper selection and maintenance of hjulfälgar are essential for vehicle safety and performance.