Gear ratio for 35s and 37s

mrmet1983

mrmet1983

New member
Sharkey said:
With a 3.8 yeah...with a 3.6 I would stick with 5.13's.
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Decision made thanks guys , still curious what everyone is running ? This cud be a good reference point for others .


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
 
R

rtguy1

New member
for reference...

2012 auto w 37's

i have 4.88's. works well for me. good middle point for highway speeds. my rpm's are higher than the charts show since a 37" tire is not really 37"....keep that in mind when refering to the charts. not sure i would mind 5.13 but 5.38 would be too much for me i'm sure
 
crippledpetey

crippledpetey

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mrmet1983 said:
Sweet!!! Thanks a lot . i was just looking for some opinions cause without asking here I probably would have went with 456 and not been happy with that decision. Lots of threads about this but I could only find answers for a manual or people who had the 3.8L


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
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I ran 5.13's on 35's and loved it personally. I could whip almost anyone off the line :cheesy: but freeway was a tad high on the rpm scale. Currently my wife runs 37's on 5.13's and loves it. We both have '13 with the 3.6 and autos.
 
mrmet1983

mrmet1983

New member
crippledpetey said:
I ran 5.13's on 35's and loved it personally. I could whip almost anyone off the line :cheesy: but freeway was a tad high on the rpm scale. Currently my wife runs 37's on 5.13's and loves it. We both have '13 with the 3.6 and autos.
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thank you so much wud love to know what rpms ur at when doing 75 on the highway
 
mrmet1983

mrmet1983

New member
hey eddie when using that chart for the tire size and gears is that the printed tire size or the actual size when measured with tape measurer
 
mrmet1983

mrmet1983

New member
I'm leaving towards 513s since they will work best when I jump to 37s


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
 
wayoflife

wayoflife

Administrator
Staff member
mrmet1983 said:
hey eddie when using that chart for the tire size and gears is that the printed tire size or the actual size when measured with tape measurer
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Printed. The only time "actual" tire size matters is when calibrating your speedo. Printed is what is always referred to otherwise when discussing lift height, wheel size, gears, etc.
 
mrmet1983

mrmet1983

New member
What kind of gears do you guys like cuz I see high performance I see thick cut and also how do I know if I have reverse rotation or standard rotation ?


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
 
crippledpetey

crippledpetey

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mrmet1983 said:
thank you so much wud love to know what rpms ur at when doing 75 on the highway
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On 35's I think it was around 3200-3400 at 75. On 37's it is 2800-3200 (sorry was looking over wife's shoulder from passenger seat and kept getting distracted by other things :cheesy:). She loves 5.13's with her 37's!
 
mrmet1983

mrmet1983

New member
crippledpetey said:
On 35's I think it was around 3200-3400 at 75. On 37's it is 2800-3200 (sorry was looking over wife's shoulder from passenger seat and kept getting distracted by other things :cheesy:). She loves 5.13's with her 37's!
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Haha those things have been causing accidents for years now lol and thank you that's pretty much what I'm looking for.


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
 
B

B-rab

New member
I'm a automatic @ 373 gears on 35's but most of the time on the highway I drive it in "bump" because the gearshift is a little off I've noticed and sometimes sticks unless I let off the gas.
 
mrmet1983

mrmet1983

New member
B-rab said:
I'm a automatic @ 373 gears on 35's but most of the time on the highway I drive it in "bump" because the gearshift is a little off I've noticed and sometimes sticks unless I let off the gas.
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Yea the 373s suck with an auto and 35s IMO , unless u don't live around any hills


2013 JKUR 4" Enforcer lift w/ 35" fierce attitude MTs , RR modular front bump w/ warnvr8k
 
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