Felni

Felni is the wheel rim, the circular metal hoop that forms the outer part of a wheel and to which the tire is mounted. It supports the tire bead, transfers load from the vehicle to the tire and hub, and provides a mounting surface for the hub and wheel bolts. In automotive wheels, felni is typically made from steel or aluminum alloy and can be cast or forged. Steel rims are durable and inexpensive but heavier; alloy rims are lighter and offer better heat conduction and design options. Forged rims tend to be stronger and lighter than cast rims but are more costly.

Rims come in standardized sizes defined primarily by diameter (in inches) and width. The diameter ranges commonly from 14 to 22 inches for passenger cars; width affects tire fit and performance. The bolt pattern, hub bore, and offset (ET) determine compatibility with a given vehicle. Finishes vary, including painted, powder-coated, polished, and chrome.

Maintenance and safety: inspect rims for bends, cracks, and corrosion; damaged rims can lead to tire failure or poor handling and should be repaired or replaced. Mounting, balancing, and tire fitting should be performed by professionals; improper fitment can cause loss of control. Rim width must match tire specifications to ensure proper bead seating and performance.

In bicycles, felni refers to the rim that supports the tire and, on rims that use rim brakes, provides the braking surface. Road and mountain bikes use different standards for rims, hubs, and brake performance.

Rims influence ride quality, handling, heat dissipation from brakes, and overall cost. Understanding materials, sizes, and compatibility helps ensure safe and reliable wheel performance.