Quote:
Originally Posted by 101Volts
... I did some comparison tests today between 55, 50 and 45 PSI and the car could accelerate quicker at a given engine LOD when at 45 PSI than at 50 or 55 PSI, Thus it allows you to accelerate at the same rate as a higher pressure at a lower engine load which = Higher fuel economy (In theory.) ...
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When I raised the pressure in my tires from 30ish to 45 PSI I noticed that my daily commute distance as indicated by the MID dropped from 36.4 km to 36.2.
A higher tire pressure apparently makes the tire cover more distance per rotation. It gave over 5% better FE, and I can add another 0,55% to that to compensate for the difference in circumference.
It will also make a difference on the ratio between indicated and real speed.
So if you were measuring acceleration by the speedo, MID or SG, here's your answer. Though the difference between 45 and 55 PSI will probably have less effect than the 0.55% I got from raising from 33? PSI to 45.
If you were measuring your speed by GPS; nothing said
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.