Originally Posted by 3kgtslflip
i have 16" rims (16x7) with bridgestone potenza s-03 tires (205/50/16)... my speedometer will be off i think, so my question is... by how much will my speedometer be off? how much will it be off by percentage accuracy? i tried doing the math from the info they give at tirerack but i think my solution was incorrect so if anyone knows please help me n tell me thank you
You can use a tire calculator like the one at
http://www.powerdog.com/tiresize.cgi
It shows that your size is 2.7 percent larger. That means that your actual miles will be 2.7 percent higher than the miles shown on your speedometer and odometer. Also, that the speedometer and odometer will show 2.6 percent less miles than actual. (2.6 percent = 1 - 1 / 1.027)