SVR Front diff "locking" at low speeds when cold
#1
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Only owned my SVR for a few months but I noticed when, for example, traversing a parking lot with tight turns while the car is cold that the front wheels tend to skip, very much like when you're driving a 4x4 truck and have the front diff locked. It appears to go away once the car warms up. Dealer wasn't worried about when they looked at the car, but also I didn't get a confirmed "yes this is normal" response. Do others with SVR and R AWD cars have this experience?
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Join Date: Feb 2014
Location: Adelaide, South Australia
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Thanks for the responses. I'm generally familiar with steering geometry and the interaction there. It's just this behavior seemed MUCH more significant than anything I've experienced on previous cars I owned. My M3 never came even close to this. None of the AWD SUVs my wife owned over the years (q5, lr disco, etc) either. It really felt like when I put my super duty in full diff lock. That said, I've not owned an AWD sports car with this wide a tire in the front before, so perhaps that's the experience that's new...
#6
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Thanks for the responses. I'm generally familiar with steering geometry and the interaction there. It's just this behavior seemed MUCH more significant than anything I've experienced on previous cars I owned. My M3 never came even close to this. None of the AWD SUVs my wife owned over the years (q5, lr disco, etc) either. It really felt like when I put my super duty in full diff lock. That said, I've not owned an AWD sports car with this wide a tire in the front before, so perhaps that's the experience that's new...
Funny the different names people have come up with. Rennlisters refer to it as the "Acorn Effect."
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petik (01-20-2022)
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#10
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Only owned my SVR for a few months but I noticed when, for example, traversing a parking lot with tight turns while the car is cold that the front wheels tend to skip, very much like when you're driving a 4x4 truck and have the front diff locked. It appears to go away once the car warms up. Dealer wasn't worried about when they looked at the car, but also I didn't get a confirmed "yes this is normal" response. Do others with SVR and R AWD cars have this experience?
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#12
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Same issue here on stock Pirelli P-Zeros (2016 F-Type S), solved by changing to winter tires: Pirelli Sottozero. Tire skipping gone immediately. I had the same symptoms you describe, which would go away when the tires warmed up. I live in North Carolina and don't really need winter tires, but they came with a set of 20" Gyrodyne wheels I purchased used. Once I use up the Sottozeros, I'm putting Michelin Pilot Sports on the 20" Gyrodynes and an all-season tire on the 19" Propeller wheels. I plan to swap out for 3-4 months of the year when it gets cold.
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