Sigh. Just found out from the UK's consumer report magazine and Germany's ADAC that the Firestone F590 has really high rolling resistance despite being a "fuel saver" and now I'm worried about the F580's (older version) having the same problem. So it's back to the EcoContact 3's but they are rated at 37 PSI which still worries me. The Fulda EcoControl is perfect (very good reviews, good price, fuel saver, rated at 51 PSI, everything I want) but the overall diameter is 5% smaller so the engine would spin 5% faster at the same speed, using up a little more fuel. Sigh.
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My aim: to achieve 3L/100km.
Best tank @ 65mph: 864.2 miles 69.36MPGus 3.4l/100km
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