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Old 03-08-2015, 06:46 AM   #7 (permalink)
EcoModding Lurker
Join Date: Feb 2010
Location: France
Posts: 52

Planetaire - '07 Toyota Prius 2 plug in
90 day: 195.47 mpg (US)
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Just 2 tires changed

Originally Posted by redpoint5 View Post

I suspect that my lack of LRR tires is responsible for maybe a 3 mpg hit, although it's just a hunch of mine. It will be interesting to see what happens to fuel economy when I finally wear out the tires and install LRR....
Last year I have done some testing. Previously I had 4 michelin energy saver (We have 16" tires here).
I drive at constant 70 km/h (44 mph) with this 4 tires and used 570,9 Wh on 5430 meter. This is not a good surface road but it is in a forest then absolutly no cross wind.
I changed the 2 front tires with Toyo nano 2. On the exact same distance, same day ... used 525,9 Wh. So 7,9 % less energy used ! Temperature was 23C, no Wind. With my P2 plug-in so 55% load on front tires.

Of course now the 2 rear michelin energy saver being used have been replaced with 2 toyo.

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