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Old 07-23-2012, 10:21 PM   #22 (permalink)
F8L
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Join Date: Oct 2011
Location: Sacramento, CA
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F8L's 2012 Prius - '12 Toyota Prius Three with Solar Roof
90 day: 62.14 mpg (US)
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Quote:
Originally Posted by turbovr41991 View Post
Thanks for the follow up F8L. I will look into the defenders. I am also considering using a 15 inch wheel. I have some 9.5 lb 15x7 enkei RPF1 I could toss on some 185/65 15 Michelin Energy Saver A/S. Is using the energy saver that much better over the defender?
If you are upsizing to a 15" and trying to decide between those two tires then yes, I believe the ESAS is a better choice in terms of cost/mile and high mpg numbers. The following assumes a 3mpg gain with the ESAS and that each tires lasts for it's warrantied tread life of 65,000 and 90,000 miles.

Energy Saver A/S
Set of 4=$374
65,000 / 45mpg = 1,444ga * $3.60/ga = ($5,200 + $374) / 65,000 = $0.857 cents/mile

Defender
Set of 4=$394
90,000 / 42mpg = 2,143ga * $3.60/ga = ($7,714 + $394) / 90,000 = $0.900 cents/mile

Yokohama AVID Ascend (T)
Set of 4=$384
85,000 / 42mpg = 2,023ga * $3.60/ga = ($7,285 + $384) / 85,000 = $0.902 cents/mile

FWIW the test that compares the Ascend and Defender should be coming put any day now. I have a feeling the Ascend will be slightly better in mpg, worse in noise/comfort but better in wet traction. Or is that dry traction? Hmm I liked the Ascends for handling and traction but not as much as the Energy Saver A/S for mpg.
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2012 Prius Three with Solar Roof - Blizzard Pearl w/dark gray interior: Prius Plug-In 15" Wheels | Michelin Energy Saver A/S 195/65/15 tires | TRD Lowering Springs | WeatherTech FloorLiners | Scangauge II | Morimoto/DDM HIDs 5000K | Clazzio Leather Seat Covers | Best Tank: 71.7mpg@702miles | Best Trip: 95.9mpg@233miles
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