You figure if you increase your mpg by a mere 5mpg, and you have a 12 gallon gas tank, that is 60 extra miles per tank. if you fill up once a week that is at least 240 miles per month. At 40mpg that is 6 gallons or approximately $26 savings a month/$322 ish yearly.
If you know how to change your own brakes, you are still saving over $250 a year. And I would rather wear my brakes down than my transmission (manual).
And one thing you probably notice is that the price of brake pads don't generally rise with the price of gas.
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