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Old 08-30-2013, 03:02 AM   #22 (permalink)
TexasCotton
Master EcoModder
 
Join Date: Oct 2008
Location: Dallas Fort Worth
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TexasThunder Avg MPG 54 - '08 Toyota Prius Base
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Quote:
Originally Posted by TexasCotton View Post
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
I listed oem spec above for the fact that I want to stay with the oem rims and maybe consider a mountable tire like 175 size .... I do not want to spend more money on different rims that reduce mileage seen that, read that , do not want to go that misdirection
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