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This is slightly tangential but it seemed better to bring this thread back instead of creating a new one.
My question is this: is there a relationship between sidewall size and rolling resistance?
I.e., all else being equal, would a 195/50 R15 tire have a lower rolling resistance than a 195/60 R15 tire?
The theory being that a smaller sidewall deflects less and since deflection is what causes rolling resistance...
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