MPG improved with heavier tires???
Our F150 came with the stock P rated, SR-A Wranglers. I didn't think they were as bad as most people claim, but if I needed new tires, why not try to eek out some improvement? So I debated going w...
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I believe that harder tires can get better mileage. Some extreme mpg contests have been won by filling tires with concrete.
I worked on a railroad and steel tires on trains get the equivalent of about 400 mpg. Of course each car is also drafting the other, the key. But on level track, one man can move an empty railcar (say 20 tons) by pushing on it. It seems like it takes forever for it to start, but finally moves, then rolls quite a few feet on it's own before stopping. Low rolling resistance. We occasionally did that while switching to gain a few more feet of clearance for an adjacent track.
Also have purposely considered low rolling-resistance specs for replacement tires on our first Prius. So far the newer one ('15) seems to outdo the old one by about 4 mpg, averaging 50+ mpg vs 46+ mpg on the 2007. I think it's all due to a more complicated computer algorithm though, as to whether the engine runs or battery kicks in.
Wes
...
I worked on a railroad and steel tires on trains get the equivalent of about 400 mpg. Of course each car is also drafting the other, the key. But on level track, one man can move an empty railcar (say 20 tons) by pushing on it. It seems like it takes forever for it to start, but finally moves, then rolls quite a few feet on it's own before stopping. Low rolling resistance. We occasionally did that while switching to gain a few more feet of clearance for an adjacent track.
Also have purposely considered low rolling-resistance specs for replacement tires on our first Prius. So far the newer one ('15) seems to outdo the old one by about 4 mpg, averaging 50+ mpg vs 46+ mpg on the 2007. I think it's all due to a more complicated computer algorithm though, as to whether the engine runs or battery kicks in.
Wes
...
