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Hello all
I have not posted in this forum long long time.However have follow some of the regular and impressive posters.
I have the following question ,concern , issue, etc
I have a 2004 Toyota Prius (Gen 2) OEM tire size is 185/65R15
so I have 15 inch alum oem rims.
I have witness others go with michelin energy X, brigdestone ecopia LRR tires and kept the oem tire size rating and above 44 psi inflation with minor mpg gains of 1-2 at best. The issue question is would a "skinny" tire make any improvement.
Specifically would a tire size of 175/65R15 make any postive mpg improvement
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