(posted in the tire forum as well. Posted here too because more traffic in this forum)

My OEM goodyears are getting a little worn. I happen to have some 195/60/R15 Yokie ES100s on hand. I would be replacing the stock 185/60/R15s.

In relation to the new size, the tire calculator says:

"Speedo reading is 2% to slow. when speedo reads 60 mph actually traveling 61.2 mph"

In my mind, this would make the speedo more correct, as it seems to be set on the fast side from the factory. How would this effect my Odo reading? I know the Speedo and Odo are incorrect in different directions, right?

Anybody else use 195/60/15s.
5th gear should seem slightly longer which is a good thing for lowering the highway rpms.

(edit* The Odo is 3% off from the factory tire size, and the Speedo is 3%? off in the opposite direction, right?
So there is about 6% discrepancy between the Odo and Speedo with 185/60/r15 tires landing in the middle. does this sound correct?)
-thanks

 

yes, correct... the reason for the 3% diff on spedo is due to the fact that the bb rolls on a 185/65/15..

 

Those 195/60/15 will be fine and actually make the speedo more accurate than the stock tires. They will also ride nicer than the Goodyears.

 

That's what I'm running now (see below). Personally I really think the slightly taller sidewall is much better suited for the profile of our cars, and as stated, the size is actually a closer fit, speedo-wise.

 

Looks good.
yeah I'm getting close to 4/32nds left on my Goodyears. So I'll stick the Yokies on during the summer at some point.

Then come November, I'm gonna rock some white painted steelies with Blizzak snow tires for next winter!
Turn the box into a snow rally car!