I wanted to save on fuel so I've been driving at 58-59 MPH. That's how I spec's the truck - 1350 RPM at 59 MPH (Cat C15, 3.73 rears, 295 tires, 13 speed). That means I have to be behind the steering wheel at least 9 hours to do 500 miles a day. I've been losing my motivation lately and tried to sell the truck. However I know for sure that as soon as I sell it and stop trucking, I'd be heart-broken looking at the big rigs on the highway. I tried driving faster, at least 60 MPH, and I noticed a part of the fun was back. Do you guys think I should switch to tall rubber or swap my axle rears for faster speed? I think if I drive at least 62 MPH (I'm in Canada), it'd more fun because I could do the same 500 miles a day in - probably - 8 hours. Any comments? By the way, I bought a FLIP High Definition camcorder and have been busy making movies about the trucking life ... If interested, check it out: YouTube - smd5231's Channel



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Yeah, forgot about the obvious. Food, clothing and shelter keep me going, too.
By my calculations if I keep the same 295 LP tires (500 revs/mi), the best ratio would be 3.42: I'd do 65 MPH at 1,350 rpm (Cat recommends to cruise at between 1,300 and 1,350 RPM). Do you guys think 3.42 ratio would be too fast for those nasty hills in parts of New York, North Carolina or California?
