คำตอบที่ 99
ตารางมาฝากครับTire RPM Ratio Chart, See how tires affect gearing
Jeep Parts & Accessories
decals and lettering by
For the best 4X4 sites on
the web check out
and vote for jeepfan.com
-visit offroaders.com-
-visit FJfan.comtech
Tire/RPM/Ratio Chart
The following chart shows engine rpm at 60 mph for various combinations of final drive ratio and tire diameter. If you want to
determine rpm at a speed other than 60, or for a combination of ratio and tire size not indicated here, the formula is:
MPH x Drive Ratio x 336 = RPM
Tire Diameter
If youd like to know your speed at a given rpm, the formula is:
RPM x Tire Diameter x 336 = MPH
Drive Ratio x 336
In both cases, "336" is simply a constant to convert the tire diameter to the linear distance the tire travels.
To determine your vehicles engine rpm with its present tires, simply measure the diameter with a tape. If the tires have a convex
tread surface, be sure to allow for it when you measure them.
Engine RPM at 60 mph
tire size/ 31" tire 32" tire 33" tire 34" tire 35" tire
36" tire
ratio
3.08 2000 1950 1875 1825 1775 1725
3.23 2100 2025 1975 1900 1850 1800
3.31 2150 2075 2025 1975 1900 1850
3.42 2200 2150 2100 2025 1950 1900
3.54 2300 2225 2175 2000 2050 1975
3.78 2425 2375 2300 2200 2150 2100
3.90 2550 2450 2375 2300 2250 2175
4.10 2650 2575 2500 2425 2350 2300
4.27 2775 2700 2600 2525 2450 2400
4.56 2950 2875 2775 2700 2625 2550
4.88 3175 3075 2975 2900 2800 2750
5.12 3325 3225 3125 3050 2950 2875
5.38 3500 3400 3300 3200 3100 3025
http://www.jeepfan.com/tech/tirerpmratio.htm
11/10/2009 7:34:58 PM
xhx
ยังมีทริปให้เที่ยวด้วยกันอีกยาวววววววว.......น่ะพี่ดาวเหนือน่ะ 
