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Tut posted a topic in Operation and Maintenance: 450 Model, 2005-2006, dieselGents: Have a humming not unlike dry bearing or winter tire noise coming from rear. Appears at about 40 K, increases, then decreases over 80K. Rear wheel bearings feel good on hoist, have fresh ones with HIs Majesty Tolsen’s grease nipple mod ready to install but now wondering if bearing noise is not coming from sealed transmission bearings. No play or noise, or rumble or chunky whatsoever at low speed turning on hoist, feel perfect but they might if they are just dry. Can a Smexpert with experience on this and good ear have a listen? Car has 135 easy west coast K on it, no snow or salt or grit. Wet winters though. Changed tires, no difference. Slight rumble from rear on hard left or right turn, its always done that. Same volume and frequency of hum whether in gear or neutral. Thanks in advance, Boys. I’m really stuck on this one, don’t want to rent a listen from Stealership or do a bunch of unnecessary work. tt Here are links to 2 videos, one coasting and one under load. Sorry for road noise, best I could do. Cheers coasting https://youtu.be/brHnnL2fMkU under load https://youtu.be/hN4Kr8AbZcI