I currently bought a car that had four winter tires installed on it (the all-season tires were completely bald). I figured that I should buy four all-season tires now that the snow is gone. However, my mechanic told me that it would be fine if I kept my winter tires on throughout the summer. Is this true? And do winter tires affect gas mileage and engine performance? Anyways, hope to hear from someone soon, thanks.
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