Gears and RPM
- Thread starter MOX4x4
- Start date
JKU Arizona
Member
It would be a better database if you run it at 65 or 70mph.
Sent from my SM-N920V using WAYALIFE mobile app
J
JKDream
Guest
Have you seen the charts that already exist?
3.6L
--
3.8L
I'm actually curious if this would provide some clarification on whether or not those tire sizes are sidewall heights or true ride heights.
My 37's and 5:13's is almost dead on to the "35" on that chart, not 37s.
DWiggles
Caught the Bug
My 37s and 5:13's is almost dead on the "37" on that chart, not 35s :dont know:
J
JKDream
Guest
Manual or auto?
aermotor
Member
Pretty sure they are just stated heights and not real world heights.
J
JKDream
Guest
That's what I'm assuming - but there's some conflicting info as per above :bleh:
DWiggles
Caught the Bug
Manual x10
J
JKDream
Guest
Interesting. I'm auto - close to 3k rpms at 70.
MOX4x4
New member
Same here, almost 3k at 70 (auto). My 35's are just over 33, charts seem about 2-300 low. Hmm, might need to get the GPS out and check the MPH.
DWiggles
Caught the Bug
Yep, verify with GPS, I'm almost willing to bet you flashed the wrong tire size. It's easy to do. You need to measure from the ground to the center of the axle and multiply by 2. But GPS will get you there too. Just keep adjusting tire size until you get it right. :thumb:
zimm
Caught the Bug
It's real world height. My 315 duratracs are actually 33.75" tall with weight on them.
Bingobelle
Member
does the real world hight matter? I mean, if you have like 33,5 inch tall with x amount of cargo and empty you have 34 inch of hight, you still have the same radius of the tire so I do not understand all this fuzz about real hight an mesured hight.
For me the interesting size must be when the tired is unloaded becuase you should always have the same tire diamater, radius with or withoult load.
Or I´m totaly out on a bicycle tour here?
For me the interesting size must be when the tired is unloaded becuase you should always have the same tire diamater, radius with or withoult load.
Or I´m totaly out on a bicycle tour here?
WJCO
Meme King
The distance between the center hub of the wheel and the ground will change as you add weight to the vehicle. This will also change depending on the air pressure.
White Russian
New member
How do you like that if you had to do it again would you go 4.88 or stay 5.13's
Whats everyone else's opinion I have a 2013 JKU with 3.6 and an Auto on 37's I was planing on re-Gearing as well but I'm at a crossroads between 4.88's and 5.13's.
Its My Daily Driver and I like to drive it to the trail.
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