Finally got new tires
#1
Finally got new tires
After researching numerous sites and reviews, I went with the Maxxis Bighorn 275/70R18. I've got about 2k miles on them thus far and I love them. I've got the 2 inch front leveling kit from Skyjacker installed as well. Just an fyi... but I've lost almost 3 miles per gallon....
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When I installed my BFG 285/70R17s, according to my trip odometer, I lost 2 mpg.
OEM tires 235/75R17 30.9 dia
Aftermarket 285/70R17 33" dia
Diameter difference 2.1"
At 50mph speedometer reading, I am actually travelling 53 miles.
To be honest, I had a friend with a KNOWN good, calibrated speedo follow me home and pace me, it is more like the speedo showing 50, and actually doing 55... I set the cruise control at 50 and his speedo read 55 pacing me side x side...
So let's go with that assumption.
I was averaging 17mpg, I went down to 15mpg, but I am travelling 10% futher than shown... So I am actually getting 16.5mpg, so I only lost .5 mpg with the upsize of the tires...
I figure a regear, and reprogramming of the trucks computer would have a LOT of influence on MPG as well.
I did gain the lost MPG back, and then some when I switched from dino oil, to Royal Purple...
OEM tires 235/75R17 30.9 dia
Aftermarket 285/70R17 33" dia
Diameter difference 2.1"
At 50mph speedometer reading, I am actually travelling 53 miles.
To be honest, I had a friend with a KNOWN good, calibrated speedo follow me home and pace me, it is more like the speedo showing 50, and actually doing 55... I set the cruise control at 50 and his speedo read 55 pacing me side x side...
So let's go with that assumption.
I was averaging 17mpg, I went down to 15mpg, but I am travelling 10% futher than shown... So I am actually getting 16.5mpg, so I only lost .5 mpg with the upsize of the tires...
I figure a regear, and reprogramming of the trucks computer would have a LOT of influence on MPG as well.
I did gain the lost MPG back, and then some when I switched from dino oil, to Royal Purple...