Does tire size really affect speedometer?

[MetroMPG]

the other critical factor to consider is the shape of the contact patch on rain & snow performance.

all else being equal, a narrower tire resists hydroplaning better, and anyone who drives regularly in snow will choose a narrower tire for winter where possible for similar reasons.

[Matt Timion]

Originally Posted by MetroMPG

the other critical factor to consider is the shape of the contact patch on rain & snow performance.

all else being equal, a narrower tire resists hydroplaning better, and anyone who drives regularly in snow will choose a narrower tire for winter where possible for similar reasons.

You guys are making me want to switch back to my old 175s