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I have determined that a worn out ecopoia 442 is about as efficient as an energy saver A/S. Tires are most at their most fuel efficient when they are on the wear bars.
Now there's a new style of energy saver tire with a new tread pattern, don't know how these stack up again the ecopoia 442.
These 2 tires have been the top 2 for fuel economy. It looks all testing an observation support that.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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