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What Gear Ratio Do I Need For 37 Inch Tires

What Gear Ratio Do I Need For 37 Inch Tires. There are a couple of charts floating around that give the optimal gear ratios for tire sizes. What will impact your jeep’s acceleration, ability to maintain speed up a grade, and mpgs is your axle gear.

Gear set ratios for the Eco diesel 37 inch tire upgrade verse the Gas
Gear set ratios for the Eco diesel 37 inch tire upgrade verse the Gas from www.jeepgladiatorforum.com

So 4.88 beeing a little bit sronger, would be the logical choice, but you guys with 37'' always have 5.13 gears. A jeep with newly installed 35” tires will have more resistance and could use a change in gears to get the most. Make the necessary changes to your speedo by replacing your jeep speedometer gear.

Do You Need To Regear With 35 Inch Tires · Are 3.73 Or 4.10 Gears Better · Are 3.73 Gears Good For Highway · Is 3.42 Or 3.73 Better · Do You Need To Regear With 37 (2).


Bigger tires are more functional, look better, and rob you of power. For example, imagine your 4×4 came from the. This chart is based on 65 mph and a gear ratio of 1:1, on a manual transmission in 4th gear.

I Would Think That You Would Want At Least 4.56 Gears, If Not Taller.


You usually start with 65 mph, since that is the natural highway speed, multiply by 3.91 and then again with 336, dividing all by 30 gives you the before rpm of. Any reasons that i should know before i make. What size gears for 37 inch tires?

But The Easiest Way To Figure Out The Right Ratio Is To Lower It The Same Percentage You Increased The Tire Diameter Over Stock.


Gear it to 4.57 for a manual transmission and 4.88 for an automatic. I'm concerned about even running 35's with a sport/sahara gear ratio and, more important, brake size. So 4.88 beeing a little bit sronger, would be the logical choice, but you guys with 37'' always have 5.13 gears.

33 Inch Tires 35 Inch Tires 37 Inch Tires 285/75R16 265/70R17 285/70R17 275/70R18 275/60R20


This calc can be used to find a new gear ratio. A somewhat normally geared jeep running a 3.83 gear and a 2.72 low gear ratio, along with a standard axle gear ratio of 3.73 is multiplying 3.83 times 2.72 and 3.73 to arrive at 39. There are a couple of charts floating around that give the optimal gear ratios for tire sizes.

This Rounds Off To The Common 4.10:1 Gear Ratio.


In either case you'll need to adjust the speedo. Make the necessary changes to your speedo by replacing your jeep speedometer gear. What gears are best for 37 inch tire on jk?

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