Gear Ratio & Tire Size Chart
12-06-2010, 08:54 PM
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Year: 1998
Model: Cherokee
Gear Ratio & Tire Size Chart
Saw this and thought it would be usefull to everyone getting bigger tires to find the right gears if you are looking to regear...dont know if this should be or how to make it a sticky but here it is!!
Also here is the direct link -----> http://www.4lo.com/calc/geartable.htm
Also here is the direct link -----> http://www.4lo.com/calc/geartable.htm
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JaxKennXJ (05-18-2022)
09-25-2011, 01:17 PM
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Year: 1993
Model: Cherokee
Engine: 4.0
Yes, but the worst thing about that chart is that it is based on a gear ratio of 1 to 1. So according to that chart, if I didn't understand that it wasn't any good, I would think that my Cherokee with 4.88s and 35s would be turning 3045 rpm at 65 instead of 2419 rpm.
MPH X GEAR RATIO X 336 X HIGHEST TRANSMISSION RATIO / TIRE HEIGHT = RPM
65 x 4.88 x 336 x .79 for manual / 34.8 = 2419
Which is about perfect for that size of tire.
MPH X GEAR RATIO X 336 X HIGHEST TRANSMISSION RATIO / TIRE HEIGHT = RPM
65 x 4.88 x 336 x .79 for manual / 34.8 = 2419
Which is about perfect for that size of tire.
Last edited by Rock Toy; 09-25-2011 at 01:22 PM.
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