My experience is that 185/60R14 tires and 195/55R14 tires increase fuel consumption by about 10%. Your 175/65/14 tires will probably increase fuel consumption between 5% to 10% more then the OEM 165/65R14 tires.
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2000 Insight 5spd with 290,000 Km
Daily driver (previously used for autoslalom & track lapping)
Collision avoidance and Track driving instructor
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