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I thought our speedo automatically calculates changes in tire size to show the correct speed we're going basically no matter what size tire we have.
Correct me if I'm wrong please.
Cause if I run a 295/35/19 rear tire and I am going the same speed as John Smith on the highway whom has stock tire sizes we will both show the same speed on our speedo... Correct?
your speedometer has no idea what size tire you're running- so no, it does not correct for anything.
lol I knew I kind of felt weird when I went from 245/45/18s to 245/40/18s.. same for fronts i also went 5mm smaller height and felt like I accelerated faster..
So how do we get it to show the correct speed? Do you all change the speedo gear teeth count?
Originally Posted by Done Deal DR
I have not heard of anyway to correct this, at least with a reasonable cost.
You live with it, though of course I'd recommend the proper tire sizes if its an option.
Uh... So everyone I know running around on the boards with slightly larger diameter then stock tire sizes has their speedo off? And we can't correct it. That sucks.
Uh... So everyone I know running around on the boards with slightly larger diameter then stock tire sizes has their speedo off? And we can't correct it. That sucks.
Yes, that's precisely correct.
As long as you know the difference you're fine. You can get the exact difference of your speedo @60MPH using a site like the 1010 tire calculator, or using basic math if you know the overall diameter of stock and your new tire.
