Originally Posted by dutd33
Wow that's awesome! 31.6 MPG is really good.
Just out of curiosity, a friend told me that bigger tires will actually give you better mileage, is that true?
I averaged better than that with my 18 inch stock wheels and Michelin ultra high performance 18 inch tires. Anyone that thinks changing the 18" low rolling resistance tires to other Focus OEM all season tire sizes will yield them a 1-2 MPG improvement may be sadly mistaken after spending the money. And they will definitely be missing a lot of braking and cornering performance.