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Discussion Starter #1
What kind of mileage are you plus sized guys getting with 17 and/or 18 inch wheels on average?

Thanks!
 

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The mileage dosen't necessarly go down. You are actually traveling further than your tip is reading. I did a trip this weekend with 215/45/r17 and the trip was off about 7.5-8%. Measured MPG 27.9 x 1.08 = 30.132 (running 75). And you are also going faster than your think.
 

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Discussion Starter #3
I'm still on stock tires, I was just wondering if the added weight and larger contact patch had any effect on mileage.

I've read a lot of posts about mileage dropping off after larger wheels were bolted on, is this untrue? Or just uncorrected MPG math?

Thanks for the reply, SB.
 

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A different contact patch wouldn't change the mpg. The over diameter will. If you get a combo thats bigger than the stock you would be going further, with smaller, you would be going shorter than what the odometer says. now weight on the other hand makes a difference.
 
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