It's 2 cents per mile. 50 cents per 100 miles. Assuming 15,000 miles per year. That's a $75 tax (plus the $1000 GPS unit, I'm sure, but that's neither here nor there). By switching to bigger tires ($100 minimum) you save $7.50 per year in taxes. And your tires will eventually wear out and need to be replaced at a higher cost than your smaller tires.
Your math is a bit off. That would be a $300 tax for 15000 miles.
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It's 2 cents per mile. 50 cents per 100 miles. Assuming 15,000 miles per year. That's a $75 tax (plus the $1000 GPS unit, I'm sure, but that's neither here nor there). By switching to bigger tires ($100 minimum) you save $7.50 per year in taxes. And your tires will eventually wear out and need to be replaced at a higher cost than your smaller tires.
Your math is a bit off. That would be a $300 tax for 15000 miles.