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Archive for July 25th, 2006
Tire Size on F250
Posted by Tim on July 25, 2006
I just bought a used 2002 F250 Diesel Superduty Crew Cab (4 doors) Short Bed truck which came with the standard 265/75R16 tires. I like the look of the 285’s alot better and it is time to replace the tires. How will my fuel economy be effected, if at all, by changing to the 285/75R16’s?
There is not a simple answer to your question. My best guess is that it will make very little difference. If everything else is comparable, the extra width of the 285 will mean worse fuel mileage but the 285 is taller which would help fuel economy. The tires you are removing are worn so, they are at the point in their treadlife where they deliver the lowest rolling resistance and best fuel economy. New tires will have maximum tread depth, which is when tires are at the worst stage of their rolling resistance life. On top of all that is the potential to change tire brands or tire types within a brand which means the tread compound and construction of the tires will be different and have different rolling resistance. Confusing, right?