Mudderoy
NAXJA Forum User
- Location
- Katy, Texas
Georgia Mike said:What you're not realizing with that scenario is that a vehicle uses more fuel to get going from a stop than it does while maintaining highway speeds, especially if it's overgeared for the tire size (IE: 33's on 3.55's). That's one of the main reasons the "city" mileage rating is always so much lower than "highway" mileage ratings.
If he's going to be doing almost all highway driving with very little stop and go driving, you have a valid suggestion to for an MPG experiment. If he runs into stop & go traffic, the experiment's results be get more and more skewed every time he stops and has to get going again.
Plus I don't have to mention that driving with an overgeared axle/tire combination is very hard on an automatic transmission because of excess heat. Also, it's hard on a manual transmission's clutch due to excess slipping needed to get the vehicle rolling.
Gears are worth the effort. Period.
eace:
I live in the Houston area, and I use I-10 to go to and from work. I have a 20 mile commute that takes anywhere from 20 minutes to 1 1/2 hours. I do the stop and go every day.
Also I have a PM from a guy that is running the 4.56 and he does 3200 rpm at 80 mph. I'll probably be going to 33's eventually to 4.56 sounds pretty good.