[arcosine]

Every time I put larger diameter tires I see mpg improvement, fatter tires though, are harder to push through snow and slush, hydroplane easier.

I have 195/65R15 from the stock 175/70R14. Ive had 205/70R15 at one time, but used spacers. Car was not as stable at interstate speeds, but the spacers helped some. I liked how it cruised,lower rpm. Around town it would roll farther,no penalty.