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jeeply 02-03-2012 08:53 AM

just wondering
does anyone know what gear ratio an 04 wrangler with factory 30s would have

Wrangler06 02-04-2012 09:04 PM

what model? x, sport, rubicon?

jeeply 02-05-2012 06:11 AM

gear ratios
its a sport model.

Wrangler06 02-05-2012 10:00 PM

probably 3.73...check to see if your diff tag is legible...both differentials have a metal oval shaped tag on the left side of the diff cover...theres a bunch of numbers on there but the first 3 numbers on the 2nd row of numbers will be your axle ratio, being an 04 it shouldnt be rusted out too bad so you might still be able to read it.

jeeply 02-06-2012 02:18 PM

thank you Wrangler06. i cant see any diff tag under there but going by the rpms it seems right. at 60mph its at 2100rpm in 5th gear. thanks again.

Wrangler06 02-06-2012 09:22 PM

sounds about right to me..and for the 5 speeds the 4.0s were 3.73s unless it was a rubi..6 speeds have 3.07s

brainofj01 02-07-2012 01:58 PM

What's your VIN?

jeeply 02-07-2012 11:44 PM

vin #?
Its 1j4fa49s84p791758

brainofj01 02-08-2012 10:26 AM

You have 3.73 gears. Any other questions, let me know.

jeeply 02-08-2012 02:18 PM

ok thank you brainofj01. as you know. its good to know

jeeply 02-11-2012 10:11 PM

with said 3.73 gearing could i get away with 31s without any problems

Jeep lunatic 02-20-2012 05:23 PM


Originally Posted by jeeply
with said 3.73 gearing could i get away with 31s without any problems

Yes you can run up to 33's, your speedo will be off by 5mph at 60 mph but you'll still have good torque and fuel mileage

jeeply 02-21-2012 02:38 PM

thanks Jeep Lunatic. now if these dang 30s would wear out.

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