getting bigger rims = odometer/speedometer changes?

[CASTREX]

Originally Posted by songa

thanks for the input. well i really dont know much about cars, esp. stuff like how wheels affect fuel economy, etc. so i was just tyring to find out more information about them. 0.1% difference is minimal but over a long distance, the odo will be reading a value much less than what you actually traveleed, right?

in any case, i probably will end up getting 15"

thanks guys

0.1% is way inside the margin of error of your speedometer.

The general recommendation is not to exceed +/- 3% tire size diff.

Also, you will track you MPG over the distance driven on one tank of fuel right?

So, if your tank goes for 350 miles. 0.1% of 350 miles= 0.35 miles.

If your car does 40 mpg that means a difference of 0.00875 gallons per tank.

Again, 0.1% is nothing