It's about time guys, Mythbusters has finally tested the myth of over inflated and under inflated tyres!!!
heres the link ad the results
MythBusters: Tire Pressure Test : Video : Discovery Channel
TV Review: Mythbusters 8.23 – “MiniMyth Madness” | Fandomania
Control, 35psi (manufacturer recomendation)
tyres at 10psi = 3.7% increase in consumption
tyres at 30psi = 1.2% increase in consumption
tyres at 40psi = 6.2% decrease in consumption
tyres at 60psi = 7.6% decrease in consumption
im amazed that even at 5PSI over recomended pressure there was a 6% increase!!!
They even said that over 1 year you would save roughly $77(us), that may not sound like much but that $77 more in my pocket for spending 2mins pumping up tyres
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test car: 2004-2007 Ford Taurus
test methodology:
Quote:
- Lay out a driving course that simulates normal city driving with a series of stops, turns, etc.
- Bypass the car’s gas tank and fit it with a fuel cell that can be removed and weighed in order to measure precisely the amount of gas used during each test.
- Make sure tires are inflated to the recommended pressure of 35 psi for the control test.
- Drive the course and calculate the gas mileage.
- Repeat step 3 with tires extremely under-inflated (10 psi) and extremely over-inflated (60 psi).
- Repeat step 3 with tires slightly under-inflated (30 psi — 15% lower than recommended pressure) and slightly over-inflated (40 psi — 15% higher than recommended pressure).
- Analyze the results.
(source: TV Review: Mythbusters 8.23 – “MiniMyth Madness” | Fandomania )
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