Quote:
Originally Posted by d0sitmatr
my Ranger's dry weight was close to 1k less at around 3800lbs, I had an aluminum drive shaft, and an aluminum hood. both of which drastically reduce the weight of the vehicle over the equivalent steel parts by a good 100lbs.
the funny thing was that I was running tires @ 29" diameter, and then dropped to tires @ 27.5" diameter and it actually increased my FE by a slight margin, or I stayed at the same. due strictly to the fact that my engine had to work much less to gain and maintain speed. with the 29's, going over a simple overpass, would drop my gear into drive, and occasionally into 3rd... once I put the 27's on, it never dropped out of OD.
I could, but I wont
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Mike, frank lee has discussed this quite a lot.
Trucks, suvs due to the nature of the design, rarely benefit from taller tires. It seems that the gearing (for heavy loads) is already optimal.
Also, in my car experience w/ taller tires (i swear by them) you have to do at least 50% of your driving at freeway speed to see a marked benifit.