What rear axle ratio is best for fuel economy?
The lower the number, the better fuel economy, and the higher the number the more towing power you have, but fuel economy suffers. For instance, a 3:31 gets better fuel economy than a 3:73. On the other hand, a 3:73 or perhaps a 4:10 will tow much more, while fuel economy greatly drops.
Does rear axle ratio affect gas mileage?
Manufacturers use the standard axle ratio when setting fuel economy estimates, but fuel economy can drop by 1-2 miles per gallon when changing axle ratios.
What axle ratio is best for highway driving?
For on-highway linehaul, the range tightens to a fuel friendly 2.26 through 3.42 for the most common ratios. “For on-highway, direct drive, it starts all the way down at 2.26 and up to 3.08 or larger,” Garrison says.
Do larger tires give you better gas mileage?
For example, larger tires decrease your fuel economy because they are heavier, while smaller tires increase fuel efficiency. Bigger tires also have a higher rolling resistance than smaller tires which means they require more resistance and effort to get them rolling.
Is a 3.55 axle ratio good?
BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.
Is a 3.31 gear ratio good for towing?
The 3.31 might be capable of towing the trailer. But if you are towing the majority of the time, you probably want the 3.55 because it will tow better and provide better fuel economy loaded.
Is a higher axle ratio better?
A numerically higher axle ratio provides a mechanical advantage to send more of the engine’s available torque to the rear tires (and front tires, in a four-wheel drive vehicle), but you pay the price at the fuel pump. So, a truck with optional 3.73 gears will tow a heavier trailer than one with 3.55 or 3.21.
What is the best tire for fuel economy?
Now that we have you in a good mood, here’s our 2022 Top 10 Most Fuel Efficient Tires designed with performance and fuel efficiency in mind.
- Michelin Defender.
- Continental PureContact.
- Goodyear Assurance Fuel Max.
- Bridgestone Ecopia EP422.
- Bridgestone Turanza Serenity Plus.
- Michelin Energy Saver A/S.
Is 3.92 a good gear ratio?
4) 3.92 has 3 unique lower gears for towing. 5) Speed range that 3.21 is better at towing: 31-38 MPH, 48-57 MPH. 6) Speed range that 3.92 is better at towing: 0-30 MPH, 39-47MPH, 58-70 MPH.
Are 3.21 gears good for towing?
3.21 is not a towing gear. Manufacturers like throwing those road gears in since it is all about the mpgs. I would highly opt for the 3.55 but if you ever think about upsizing trailers then 3.92 would be my choice. It’s very easy to find 3.55 gear ratios on the 2019 Ram 1/2 ton trucks.
What is a 3.55 axle ratio good for?
Towing: For pickup trucks released after 2010, the best axle ratio for towing falls somewhere between 3.55 and 3.73. This range provides good acceleration for V8 gas and diesel engines.
What are 3.31 gears good for?
What is a good gear ratio for a street car?
If we have a daily driver, 2.55 to 3.25 gear ratios typically work best, whereas a street/strip application we would usually use a 3.42 to a 3.90 gear ratio, and race applications most commonly use a 4.10 and above gear ratios.
What is the best axle ratio for fuel economy?
Fuel Economy Axles: For maximum fuel economy you want an axle ratio that is lower in the number of drive shaft rotations (pinion gear) for every tire rotation (ring gear). Examples of this would be a 3.21:1 and 3.42:1 axle ratio.
What is the best towing axle ratio for a pickup truck?
It’s pure mechanics. BEST TOWING RATIO: In general, the best towing axle ratio for most of the post-2010 pickups is in 3.55 or 3.73. Those ratios provide very good acceleration with gas V-8s and diesels.
How do you find the rear axle ratio of a truck?
It can be computed by dividing the number of ring gear teeth by the number of pinion teeth. For most trucks, the axle ratio ranges from 3 to 4. But in this article, we will compare the 3.42 Vs. 3.73 rear axle ratio.
What does the axle/gear ratio mean?
For the sake of an example a 3.73:1 axle/gear ratio means the drive shaft (or pinion gear at the end of the drive shaft) rotates 3.73 revolutions for each rotation of the rear wheels (or ring gear in the axle).