to start, i don't know where to post this question so here it is.....

i put bigger tires/wheels on my car. i have heard arguments for both sides but does my spedometer read correctly now?? and does my odometer??

i myself am unsure i could see how but i could also see how it wouldn't and plus i am not sure how either are read on my car

 

bump

 

We need to know the numbers off the side of your tires and what size wheels you are running. There is a website that tells exactly the difference compared to stock but I will have to find it again. I will post it if I find it.

 

Here it is Tire size calculator <CLICK HERE>

But yeah, we kinda need to know the size tires you have to tell if the readings will be off. They read by counting revolutions, so if the tire has a larger or smaller circumfrence, they will miscalculate the total distance covered per revolution. But use the link above to see how far off you would be. Anything les than 1 or 2% shouldn't worry about.

 

here's another calculator for ya. http://www.1010tires.com/tiresizecalculator.asp

and the general rule here, if you put a larger wheel/tire on your speedometer will read lower. if you put smaller wheel/tires on your speedometer will read faster.

 

urbanknight found the one I was looking for...that should tell you pretty much exactly

 

I found that link on a forum a long time ago, and put it in my favorites. Now I have it ready for anyone who needs.