oky, i'm lookin to get a nice set of tires but now if i go anything smaller profile size tire than stock...the speedometer reading will goes off.

my stock tire: 205/55/16
New Tire: 205/50/16

from Tire calculator: speedometre reading will be 3.2% too fast. speedo reads 60mph, but actually traveling 58.1mph

my question is, will that add up more mileage from traveling? whats bad side will affect my car?

any opinion pls.

 

You should be ok. I'am running 195/50/15 when my stock size is 195/55/15.

 

Yes, you will be adding up more mileage than the actual mileage accrued. It won't be too much, though. Other than the speedo and odo being off by a bit, there will be no other negative side affects to your car.

Your smaller tires essentially change the gearing of the car (indirectly), which should improve acceleration times. Not by much, though.

 

mine is
stock: 205/55/16
now: 205/40/16
i cant even tell that the speedometer is off, having a lower profile tire makes the car quicker, the only thing is that its so low to the ground.