Originally Posted by NHBubba
Many of us are quite aware of the fact that you need to reflash the computer for a tiresize.. although really, what does it impact other than the speedo indicator and the odometer? I wasn't aware that it really hurt anything except maybe your resale value as your odo will now be wrong..
It hurts other things too, beginning with your pocketbook, the bigger the tire, the more it costs. And you multiply the added cost by 4.
The bigger the tire is than the stock size, the more it decreases braking efficiency and the result is that it takes more distance to stop. This is a big safety issue. Tires 2 or 3 sizes larger than the stock size weigh a lot more than the stock tires, and your brakes are designed for the stock tires. The extra weight of the oversize tires is more than the brakes can compensate for.
In addition, your mpg goes down and you can't accelerate as fast as with the stock tires.