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Originally Posted by Zebulon1993
Won't that make my tires wear out faster?
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Redpoint already said it, and I'm just adding: I don't think so. I haven't experienced accelerated tire wear, and I'm running my Prius at 50psi. My truck gets 45psi. Wear hasn't changed for me.
Slow down. Going twice as fast requires eight times as much power, so backing off even a little makes a big difference to how much power it takes. Averaging 60mph takes only 78% as much engine power as averaging 65mph, while being only 8% slower. Leave a couple of minutes earlier, back off the gas a tiny bit, and the savings can be significant.
You could experiment with some stealthy grille blocks, behind the grille of your car. Block off those regions that don't actually open directly onto the radiator. They won't show from the front, especially if you take a few minutes to paint them black once you get the locations and sizes adjusted to suit you. NOTE: monitor engine operating temperature carefully when you do this.