The increasing accumulation of non-biodegradable waste tires poses significant environmental challenges, necessitating innovative recycling solutions. This study investigates the use of waste tire-derived char (WTRC) for the synthesis of carbon nanomaterials (CNMs) through microwave-assisted pyrolysis. Waste tire rubber crumbs (WTRCs) were pyrolyzed at 600 W for 20 minutes to produce char, which was subsequently purified and utilized as a precursor for CNMs synthesis. CNMs were synthesized using tire-derived char and ferrocene as a catalyst at varying microwave power levels (600–1000 W), reaction times (10–40 minutes), and catalyst-to-precursor ratios (25–100 wt%). Comprehensive characterization techniques, including FT-IR, XRD, Raman spectroscopy, TEM, and FESEM, revealed that Carbon nanofibers (CNFs) synthesized at 1000 W under optimal conditions exhibited bamboo-shaped, tubular structures with diameters ranging from 425 to 881 nm. XRD confirmed the graphitic nature of the CNFs, while Raman spectroscopy indicated a moderate degree of graphitization (I