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I've had my Camaro ZL1 for a couple of years now and it's been an absolute beast, but recently I've started hearing this faint whine from the rear when I'm cruising at highway speeds, and it's got me seriously worried. At first I thought it might just be tire noise, but it changes pitch when I accelerate or lift off, which makes me think it's something in the differential or maybe even the driveshaft. I took it to a general garage near my office in Al Quoz and they had a quick listen, said it might be low on fluid, but when I asked if they had the right friction modifier for the limited-slip diff, they looked at me like I had two heads. That's when I knew I needed a proper specialist. I'm based in Al Manara and I've noticed a few American car workshops around the area, but…

Something changed with my C Class recently and I want to understand if this is something to worry about before I just wait it out and hope it resolves itself, over the past week or so the brake pedal has started feeling noticeably firmer and requires a bit more pressure to get the same stopping response I'm used to, which is honestly the opposite of the soft spongy pedal issue I've read about people dealing with elsewhere, so now I'm wondering if a harder pedal actually indicates something different mechanically, like maybe a booster issue or something related to how the brake assist system is functioning rather than anything to do with the pads themselves, does anyone know if pad wear alone can cause pedal firmness to change, or is that more commonly associated with something else entirely like a vacuum assist problem, because I always assumed pad wear mainly…