[AG87BlkLX]

Wow!

I get 17 if I'm lucky. That is almost all highway, but at 80mph usually.

Sent from my Galaxy Note 4 using Tapatalk.

Going 80 in a RL isn't a recipe for 20 plus mpg.

 

[AG87BlkLX]

I'm trying to understand how this works. Oversized tires typically make the speedo read low and FE to decrease resulting in lower mpgs. Also, perceived power should be adversely affected with oversized tires (effectively lowers the final drive ratio).

So how did you determine the oversized tires make the speedo read right?

Ricer metric math.