Last thoughts on this. Perhaps the truck had allergies or was self-adjusting for mixed fuel or the added weight of the tires. But like @nickd said, “…need more data”.
Do you think resetting the average mpg from a stop with o zero mpg, vs rolling with a 19mpg, could play a significant part in factoring the average? Or even factoring in remote starts, sitting at idle for however long?
You’re 100% right. Everything is out of wack with anything other than the OE size. The average mpg is just an estimate anyway. More like a shameful reminder of what my mileage could have been before the upgrades. Just using a rough 2-8 mph addition to what the speedometer reads. If it reads 50...
Similar situation. Leveled the truck and went to a 275/70R18, my mileage took a massive drop to 15.1. At the time I didn’t change my driving habits. This past week I got to thinking perhaps the difference of tire size change to speed ratio might be playing a part in it. I reduced my speed...
Good evening! Right now I’m running the Pirelli XTM AT in a 275/70R18. I wanted a larger tire after the truck was leveled. Pirelli didn’t offer the AS 3 Plus any taller without changing wheel size.