Rolling resistance
#11
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I've never put the jeep to N while moving at 40-60mph but I'm sure things won't change much.
#12
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Another reason is that the front axle can't be unlocked, so it adds resistance. Going to manual hubs would add an easy 1-2 mpg. Plus, it would drive better. Not only are the front shafts and gears turning, but so is the front driveshaft and that turns the front of the T case. Talk about a waste of energy.
#13
JK Enthusiast
Digital
Aerodynamics and tires have an effect but it's basically all controlled by the computer on FI vehicles. I had a Buick Park Avenue that barely slowed down at all when the accelerator was released.
#14
JK Freak
I know exactly what the OP means. I have a 2 door with the 3.6 and sometimes I just wonder if my ebrake is dragging because it "feels" like something is holding it back. Nothing sciencentific in my analysis. ..just strage as the OP stated.
I have an auto w/ 3.73 gears and stock rubi MT tires. Nothing else.
I have an auto w/ 3.73 gears and stock rubi MT tires. Nothing else.
Last edited by demtek9; 02-18-2015 at 09:05 PM.
#15
Edit: forgot to add a link. It is based on semi trucks. However the same rules apply for everything on the road:
https://www.nptc.org/index.php?optio...419&Itemid=527
Last edited by castlerockjeep; 02-19-2015 at 04:53 AM.
#16
JK Freak
With my jeep, it felt like my rolling resistance was greatly reduced after I got rid of the stock driveshaft and went with a Coast 1310. I think the bearings were going and it was creating some drag.
#17
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#18
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Throw some 35x12.50 MTR's with Kevlar and add the 4.10 gears I have and you will find out about rolling resistance and terrible gas mileage but hey we don't buy and modify these JEEPS for gas mileage or reducing rolling resistance.Throw some heavy bumpers and winches and it gets even better at about 12 mpg...but damn it looks badass and rocks the trails like nothing else out there!
#19
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Throw some 35x12.50 MTR's with Kevlar and add the 4.10 gears I have and you will find out about rolling resistance and terrible gas mileage but hey we don't buy and modify these JEEPS for gas mileage or reducing rolling resistance.Throw some heavy bumpers and winches and it gets even better at about 12 mpg...but damn it looks badass and rocks the trails like nothing else out there!