Upgrading to 37-inch tires would calculate to about a 16 percent increase in tire diameter. Increasing the 4.10 axle ratio by 16 percent would dictate the need of a 4.75 axle ratio to match the 37-inch tires.
That’s why I run a 4.56 gear ratio with 35″ tires. This gives me decent fuel efficiency at highway speeds, and enough low end power to throttle through difficult obstacles. Below I’ve outlined a gear ratio chart that cross compares tire size to gear ratio for the ideal RPM.
What does 4.88 gears mean?
Short (low) gears have HIGHER numerical numbers, such as 4.11, 4.30, 4.56, 4.88, 5.13, 5.36, etc. In simple terms, the numbers mean how many turns of the drive shaft to one turn of the rear wheel.
How do I know what gear ratio to get for bigger tires?
What gear ratio should I run with 37-inch tires? – Related Questions
Is 3.55 or 3.73 gears better?
PERFORMANCE: The larger the axle ratio number, the quicker the truck will accelerate. For example, a truck equipped with 3.55:1 axle gearing will accelerate faster than one equipped with a 3.31 axle ratio. Similarly, a pickup with a 3.73 axle ratio will be faster than one with 3.55s.
Do bigger tires hurt transmission?
Changing the tire circumference changes the gear ratio for your transmission to the road. This causes your vehicle to require more lower-end torque to turn the wheels and the engine will spin slower. What is this? This slower spinning engine will cause slower acceleration and more heat in your gearboxes.
Do you need to change gear ratio for bigger tires?
Yes.Larger diameter tires change the overall drive ratio of the whole drivetrain. This can affect performance and fuel economy. Larger width tires also increase rolling resistance, which impacts performance and economy.
Do bigger tires affect gear ratio?
When taller tires are installed on a truck but the axle ratios stay the same; the effective gear ratio is reduced. This means the engine is forced to operate below its power band, and performance and fuel economy suffer as a result.
What gear ratio do I need for 28 inch tires?
With 28-inch tires, you would need a 3.82 rear-axle gear to match vehicle performance with 26-inch tires and 3.55 gears. Since a 3.82 gear is not offered for most rear axles, you will need to choose a gear between 3.73 and 3.90 to get close to the optimum.
The gear ratio is calculated by dividing the output speed by the input speed (i= Ws/ We) or by dividing the number of teeth of the driving gear by the number of teeth of the driven gear (i= Ze/ Zs).
What gearing ratio is best?
A gearing ratio lower than 25% is typically considered low-risk by both investors and lenders. A gearing ratio between 25% and 50% is typically considered optimal or normal for well-established companies.
What gear ratio is best for performance?
In the real world, typical street machines with aspirations for good dragstrip performance generally run quickest with 4.10:1 gears. Lower gears are required if the car is very heavy, or if the engine makes its power at the upper end of the rpm scale.
Which gear ratio is best for high speed?
The 3.55 to 3.73 range provides good acceleration. Generally, a lower or taller gear ratio provides more top speed. In comparison, a higher or shorter gear ratio provides faster acceleration.
Are 3.73 or 4.10 gears better?
ARE 3.73 OR 4.10 GEARS BETTER? Use this rule of thumb: The shorter the gear ratio (higher number), the easier it will be for the vehicle to start moving and accelerating! This will, however, lower the top speed of the vehicle.
What gear ratio is best for towing?
The higher the ratio, the more revolutions per minute. 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.
The associated torque is quantified by multiplying the circumferential component by the radius; larger gears experience a greater amount of torque, whereas smaller gears experience less torque. Similarly, the torque ratio is equal to the ratio of the gears’ radii.
Which gear gives the most torque?
In short, lower gear gives higher torque at the wheel and higher acceleration and lower car speed. Higher gear gives lower torque at the wheel and lower acceleration and higher car speed.
Which gear gives the largest torque?
1st gear gives the largest increase of torque at the cost of largest reduction in speed.