Anonymous
Anonymous asked in Cars & TransportationOther - Cars & Transportation · 1 decade ago

# What is meant by "Final drive ratio"?

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It is the ratio of the driveshaft (or transmission output shaft) to rear wheel revolutions. 3.5 revolutions of the driveshaft for each revolution of the wheel = 3.5:1 final drive ratio.

Fo FWD its trickier to figure out as there is no drivehaft per se.

higher numerical values ("lower gears" i.e 3.5:1 or 4:1) typically (but not always)give better acceration, lower top speed, worse gas mileage, better towing ability. Lower values (2.5:1 or 3:1) behave the opposite

Source(s): Engineer + Car Guy
• tedman
Lv 4
3 years ago

Final Drive Ratio

• 4 years ago

RE:

What is meant by &quot;Final drive ratio&quot;?

Source(s): meant quot final drive ratio quot: https://shortly.im/dykvC

The ratio of the driven gears to the ones that are doing the driving.

The lower the axle ratio (higher numbers such as 3:73. 3.90, 4.11, 4.33 4.46, 4.88 or 5.13), the faster the vehicle will accelerate from a standstill, but with a higher ratio (lower numbers such as 3.50, 3.23, 3.08, 2.90 or higher) the better the mileage of the vehicle

Usually means the ratio of the 'axle' and the last gear on the tranny. OD is usually a fraction (0.79:1) while direct is 1:1.

Source(s): Search for Gear Vendors. They list common truck tranny and axle combos.

the final drive ratio is the gear ratio of the final driving axle.Rwd would be the diff ratio

that is the mathematical compilation of all gear ratios from the transmission, transfer-case, and the differential/final drive.

• Lucy
Lv 4
4 years ago

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