DutchVDub
NAXJA Forum User
- Location
- Milliken, CO
I haven't gone anything yet, still have 3.55's in my rig.
Mathematically speaking to be back to stock with a 33" tall tire you need a 4.33 gear ratio on an AW4 equipped XJ. That means 4.10's are close but slightly under and 4.56's are slightly over. The only reason I said I was going with 4.0's is because I had been planning to junkyard a HP D30 and 8.8 combo for my rig. As those can be had with 4.10's it was a cheap way to regear while upgrading axles and 4.10's would be close enough for the time being.
As it stands however I got my axles from Troy (HP D30) and Trent (L/S 8.25) and they still have 3.55's in them. Now my debate is between 4.56's and 4.88's. I plan on building and subsequently towing a camping/utility trailer and while on 33's I'm confident that the 4.56's will be sufficient I don't believe so if/when I jump to a 35" tall tire. For 35's you need a 4.60 gear ratio to be mathematically back to stock so I would be basically perfect gear ratio wise mathematically but w/o any extra to make up for the increased rolling resistance/weight of the tires. Towing even a light trailer would probably bring the suck too.
My hesitance for jumping to 4.88's right away though is that until I do jump up to a 35" tall tire I'll be way over geared. On top of that, even going to a 35" the pinion gear on a D30 4.88 set is rediculously small. I'd be a bit worried about moving my locked D30's weak spot from the u-joint to the pinion.
I'll probably go 4.56's and stick with the 33's (I really do want a set of Duratrac's) as I had originally intended in my mind, but 35's are just soooo tempting.
Mathematically speaking to be back to stock with a 33" tall tire you need a 4.33 gear ratio on an AW4 equipped XJ. That means 4.10's are close but slightly under and 4.56's are slightly over. The only reason I said I was going with 4.0's is because I had been planning to junkyard a HP D30 and 8.8 combo for my rig. As those can be had with 4.10's it was a cheap way to regear while upgrading axles and 4.10's would be close enough for the time being.
As it stands however I got my axles from Troy (HP D30) and Trent (L/S 8.25) and they still have 3.55's in them. Now my debate is between 4.56's and 4.88's. I plan on building and subsequently towing a camping/utility trailer and while on 33's I'm confident that the 4.56's will be sufficient I don't believe so if/when I jump to a 35" tall tire. For 35's you need a 4.60 gear ratio to be mathematically back to stock so I would be basically perfect gear ratio wise mathematically but w/o any extra to make up for the increased rolling resistance/weight of the tires. Towing even a light trailer would probably bring the suck too.
My hesitance for jumping to 4.88's right away though is that until I do jump up to a 35" tall tire I'll be way over geared. On top of that, even going to a 35" the pinion gear on a D30 4.88 set is rediculously small. I'd be a bit worried about moving my locked D30's weak spot from the u-joint to the pinion.
I'll probably go 4.56's and stick with the 33's (I really do want a set of Duratrac's) as I had originally intended in my mind, but 35's are just soooo tempting.
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DO WANT!!!!
