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Ratios @ 100 MPH

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Old Jun 13, 2011 | 07:50 AM
  #11  
lhracing's Avatar
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Originally Posted by nclaassen
Thanks guys for all the feedback.
The plan is not to run at a constant 100 mph, but I hear your concerns.
Also said, I adapt my driving to the road conditions.
I have run @ 93 MPH over 250 miles (fairly straight road) feeling very comfortable on 33s.
Maybe a different story on 35s.

A more realistic speed would be about 85 MPH.

The KM2 are also rated for 100 MPH as per BFG for a Q rated tyre.
http://www.bfgoodrichtires.com/tire-...-t-a-km2-tires

Do you guys maybe know the RPM @ 85?
35's @ 85mph, 5.13=2888rpm
35's @ 85mph, 5.38=3029rpm
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Old Jun 13, 2011 | 09:00 AM
  #12  
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Originally Posted by nclaassen
Thanks guys for all the feedback.
The plan is not to run at a constant 100 mph, but I hear your concerns.
Also said, I adapt my driving to the road conditions.
I have run @ 93 MPH over 250 miles (fairly straight road) feeling very comfortable on 33s.
Maybe a different story on 35s.

A more realistic speed would be about 85 MPH.

The KM2 are also rated for 100 MPH as per BFG for a Q rated tyre.
http://www.bfgoodrichtires.com/tire-...-t-a-km2-tires

Do you guys maybe know the RPM @ 85?
Sorry for being a nervous hen in previous post (I re-read it and I sound like my father when I was 18!) Not like I have much room to lecture others.

Although you are probably already aware, there have been a few stock T-case failures on lifted JK's running 5.13's or higher at speed. From the threads it looks like it might have been caused by vibrations from front pinion angles/driveshaft balance.
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Old Jun 13, 2011 | 09:02 AM
  #13  
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Thanks lhracing.
Looks like 5.13 are the gears to go with as I doubt if I will go bigger than 35s.
Also traveling @ my cruising speed it makes more sense.
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Old Jun 13, 2011 | 09:19 AM
  #14  
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jjt
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Originally Posted by crazymike
Unlikely anyone who ever went 100mph with 35" mud tires lived long enough to make a chart
Absolute top speed is 92, downhill according to GPS. Otherwise 88 is top speed. This is with 35" MTs and 3.21s.

ETA - My best friend was driving, and we were on a lonely interstate at night. Not only do I have zero desire to drive that fast, it would be hypocritical in my line of work. My top speed is 60, even though the interstates around here are 70.
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Old Jun 13, 2011 | 12:17 PM
  #15  
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HAHA woah oh no don't want to break the law mate. Eh once you go past stock tires there really is no going 100. I use to push a hundred all the time in my old silver 4 door. Really got to moving. I also have a radar detector which was paid off in the long run for each time that I DIDNT get a ticket. Or if you have the cash then go big and throw a beast engine in there and really show off to them boys.
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