dac12046

I looked on the forums and online but couldn't find the answer I was looking for. I currently have 275/65/18 tires on my fx4 would going down a size or two like 265 or 255 still fit stock rims and would I have update my Speedo or nav with the smaller width

Snayke

The middle # is the sidewall measurement in ratio to the first # width.

Piles of size.calculators online to figure that out. If youre downsizing more than an inch I imagine it would affect your speedo a bit. Again, the calculators will tell you the % youre out if you provide the stock specs vs size youre lookin at.

NASSTY

265/70/18 would have the same diameter so you wouldn't have to recalibrate the speedometer.

dac12046

Thanks for help