Originally Posted by borateen
There's about a 5 mph difference between my car's ('95 LS auto) reading and my wife's car ('02 Corolla). I'm assuming that's not normal, so I'm also assuming one of us will need to get this fixed. If it turns out to be me, how much can I expect a fix like this to cost?
Has the tire size been changed from the stock ones on either cars? Tire size in height will cause a change in how fast your car is really going.