I guess I should do my math a bit better 31 litres per 100 is about 8 miles per gallon....
I ran a the first set of Toyos on my truck and they wore fine front and rear and I ran them on factory rims (supposedly to narrow) I am on the second set now and I get all kinds of weird wear on the front first pic is drivers side noticed out side edge was wearing took truck into dealer to get alignment checked and ball joints
They said everything good they rotated the tires and said all is fine (looked like 2nd pic then) less than 5000 km later the tire is almost bald they say nothing wrong. It's the tires Pic 1
Then one day the truck starts changing lanes by itself and I take it in again and the front wheel bearing is toast. Cause of bad wear The second pic is the passenger side and it looks to be wearing fine just way faster than the rears though. This set of tires has about 20,000 km on them and one is done other 65% and rears look brand new I run my fronts at 65-70 psi and rears at 70 (most days I have 5000-6000 lbs of weight on it) and tow 30,000 lbs .
I have read that these (rams) have bad alignments from factory but I got good even wear on my first set but not the second the fronts have worn way faster than the rears this time
The only thing that I can think of the fronts not wearing the same this time is mabey the tires are from different batches of rubber???
Lowered my tire pressure. Drove the entire trip with 55 psi in the rear and 50 in the front. Really smoothed out the ride. Held me speed at a max of 60 and most of the time, if conditions allowed, I was at 55. Averaged 11.7 mpg for the trip. Very happy about that.