Gears and lockers
- Thread starter tristan6555
- Start date
No idea, I don't mess with that stuff. All I was pointing out is folks never get their tire size correct figuring this stuff out so they don't really know what gearing to get. Your tires measure 31.5" for the rolling radius.
OoopS, I’m still responding to page one posts! LOL. Didn’t see we were up to page 3!
He has “33s” that I’m sure measure out to about the same 31.5 all the rest of them do. Which I would run 4.88 for.
Assuming 5 speed's....
4:10 is obviously agreed not enough gear for 33's
4.56/4.88 is almost negligible at crawl or 1st gear at stop light
4.88 suffers with MPG above 60MPH as previously stated. MPG is not what I am after, but is a good gauge of losing efficiency at 70 MPH. More energy to do the same work.
4.88 makes sense if you have future plans?
If you're going for crawl ratio you'd change your transfer case, no?
If you have plans for 35s you probably don't want 4.88s.
My mpg going from 3.55 to 5.13 didn't change noticeably.
"33s" on 5.13 with ax15
Also since people mentioned this, I don't find 1st gear useless either. Sorry I don't know my actual rolling radius either
Wait Mickey Thompson lists the actual OD of the tire as 32.7"
This is why I use the manufacturer rev/mile listing. That 640 number is right in line with most all "33s" on the market. I am on Tirerack looking at the three 33x10.5" options listed there and they are 630, 640, and 640. That means 31.5"-32" for all of them. People make fun of me for doing extra work but that number ALWAYS works for me. Maxxis doesn't advertise that number in this case but when it's available, I use it. It works.
MPG is not RPM dependent. MPG/efficiency is load dependent. Theoretically, the 4.88 would get better MPG up to the point of peak torque, which is the point of the engine running most efficient.
Yes, AX15.
I agree that both feel similar down low.
I see where that was stated by someone else, but that wasn't your argument. And I do not agree with that statement by the guy who posted it. Definitely don't agree that first is anything resembling a granny and I would never drive mine like a 4 speed, although I could. The two ratios are so close that one is not going to suffer mpg noticeably more than the other. Did you personally drive on 4.88s and find that the mpg drained at 60? Or are you just going off of someone else?
If mpg drains at 60 with 4.88, then when you reach the equivalent rpm at 64 mph on 4.56, does your mpg start draining?
There are plenty of people that don't have future plans that went with 4.88 for 33's and like it a lot. I don't know if you've driven that setup before but if you haven't, how can you really speak to it?
For what it's worth, I don't have any of these setups now. I have in the past had a number of different combinations and I know how they run. I am now on 28"x8.5" 215/75R15 KO3s (26.86" actual) with 4.11 gears which is numerically equivalent to 33's (31.5" actual) combined with 4.88. I have the potential to go up 1" to 235s next time but I'm on the fence about that. I have run 30's on this setup before and it is functionally equivalent to 33/4.56 and overall I did prefer the drive of the 28's. The 30's were a bit quieter setup but I did feel the torque was lagging a bit around town. 235s are probably the right way for me to go....similar to what 32's would be with 4.56.
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