Black Mountain whooped my butt !!
I've been dreading our trip to Gatlinburg since we planned it and most of my fears came true. I just flat out ran out of horses coming up. When I got to the top I was in second running about 40mph a...
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You are not quite that bad, 4.10's with 265 tires from a stock 245 is an inch overall diam, so that puts you about 3.95 effective. If you had gone to, or go to a 285, then you would be down to a 3.73 effective due to tire diam. Those tires also use up 3-5 more hp than the stock tires due to diam, heavier wt etc. If you went to alum rims vs steel, you might not have the HP loss due to the heavier potential overal wt of a given tire and rim combo.
Also for those wondering. My HP requirements can vary by as much as 30% plus or minus depending upon many factors. I would assume Ron's numbers would also vary based on actual aerodynamics of a rig, as some designs and shapes are more efficient than others. The OP also has a TT which is generally speaking less efficient than a 5W. He also has the aluminum siding option, which has more wind drag than a solid wall fiberglass equal, so using more hp etc. The most efficient TT is an Airsteam, 5w a Titanium or non bedroom slide version. Any with smooth walls will pull easier than a corrugated aluminum walled version, despite weighing in at 300-600+ lbs more depending upon the length of the trailer. Weight is not always an end all be all of how much HP, one needs. When I pull my bobcat at 18K with 70sq ft of frontal area, I need around 115hp at 60 mph, Less than my old TT at 135 at 15K and 90 sqft. I got better mileage pulling the bobcat too! I pulled my mini excavator to Ellensburg over I90 snoqualmie, also at 15K as I was with my TT, I was usually 5-7 mph faster on any given steeper grade, a gear taller, and 1.5-2 mpg better in fuel mileage.
Marty
Also for those wondering. My HP requirements can vary by as much as 30% plus or minus depending upon many factors. I would assume Ron's numbers would also vary based on actual aerodynamics of a rig, as some designs and shapes are more efficient than others. The OP also has a TT which is generally speaking less efficient than a 5W. He also has the aluminum siding option, which has more wind drag than a solid wall fiberglass equal, so using more hp etc. The most efficient TT is an Airsteam, 5w a Titanium or non bedroom slide version. Any with smooth walls will pull easier than a corrugated aluminum walled version, despite weighing in at 300-600+ lbs more depending upon the length of the trailer. Weight is not always an end all be all of how much HP, one needs. When I pull my bobcat at 18K with 70sq ft of frontal area, I need around 115hp at 60 mph, Less than my old TT at 135 at 15K and 90 sqft. I got better mileage pulling the bobcat too! I pulled my mini excavator to Ellensburg over I90 snoqualmie, also at 15K as I was with my TT, I was usually 5-7 mph faster on any given steeper grade, a gear taller, and 1.5-2 mpg better in fuel mileage.
Marty
