Quote:
Originally Posted by zukered
Ottawa Valley, actually, looking from the one of the lookouts in the Gatineau Hills. But after looking up Annapolis Valley, NS, I can see the resemblance!
Are there any downsides to using a slightly bigger tire (175/65x15), aside from making the speed- and odometer go off slightly (goes 8 cm more per revolution)? It's got a bigger diameter than even the Sport's wheels.
BTW, I calculated the diameter thusly:
(height of tire section) x 2 + tire diameter
(175 mm x .65) x 2 + 15 in. x 25.4 mm/in. = 608.5 mm
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I got the same as you, 23.95" or 608.5 mm. My winter tires are 175/65x15's and they have no downsides I could find except I wouldn't autocross or track them as they are snow tires. I regret I don't remember what mpg I got but it certainly wasn't bad or I would. Dimly I remember getting more than 34 mpg on our trip to the mountains which would be better than usual.
I don't speed much but I don't slow down for corners either.
you'll not really see the 2% difference on your speedo or odo unless you cut that 'patrol allowance' way too close.
cheers.