I saw a slight frop in the mpg but not much considering its more f a safety issue I look at it as a black and white area mpg is great but sliding into a ditch or off the road and injuring ones self might not matter at that point what your mpg is as your car will be useless. Sounds harsh but thats how I look at it. My old winters were Dunlops that held up fairly well went through some really deep snow and had little problems.
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2 cars one never gets driven the other is an MPG project already at 5% increase in standard driving economy CAI and Pulstar plus. Thinking weight reduction next year.
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