Author Topic: What is the largest tire that d30 & d35 setup can handle (Read 2284 times)

4PLAYZJ · « **on:** March 08, 2007, 09:44:57 AM »

In the middle of my zj build. Engine is going in today and a good portion of my custom lift has been ordered. I would like to know what the largest tires are that I can run on my stock axles (D30 & D35). I will have lots of room because we are going up 8.5". I would change the axles at the same time but my toy fund is starting to run low, so I will be stuck with the stock axles for a few years, or until they break. Any input would be great because building jeeps is a new thing to me (used to be a chevy guy :shock: )

BlackYJ · « **Reply #1 on:** March 08, 2007, 10:20:23 AM »

There is no answer to this question, but here are some facts and it is ALL based on the skinny pedal

D30
1. The D30 is stronger than the D35, especially if it is HP
2. If you have chomos and stronger u-joints I have seen guys run 36 TSLs with ARB on a D30
3. The d30 can easily handle 35s

D35
1. I have seen people break a D35 will 31s and an open diff
2. I wheel with a guy that runs 35" MTRs, with 4.56s and an ARB on a D35 and has not broken an axle
3. People say not to put a locker in due to the added stress, however I believe different. Instantaneous torsional stress is what breaks axles, usually. With a locker there is a greater continous stress added to the shaft, but there is less chance for a high instantaneous stress since the axles are locked.
4. D35 axle tubes are prone to bending, which leads to broken axles.
5. I have heard the super 35 kits are good, but then make the R&P the weak spot.
6. I ran my D35 with 33 SSRs and an ARB for a season with no problem, but I am a finese driver and I realized what I had and did not push my luck.
7. Based on this info, 33s are generally the limit for the D35 if you are not hard on the skinny pedal. If you are either carry spares (both shafts) and learn how to change them or replace the axle

cLAY · « **Reply #2 on:** March 08, 2007, 07:37:56 PM »

I ran 31s and a rear locker in my XJ with the D35/30 combo for about 3 years, first year of that it was still a DD. Only problem I had was I went thru a LOT of front bearing/hub units and at $150 each it got cheap to upgrade.

cuzican · « **Reply #3 on:** March 08, 2007, 08:01:28 PM »

I broke both axles in a dana 35 with 35" tires, 4.56 gears and a Detroit, however, the breakage had nothing to do with the rotation of the axles. My breakage was caused by flexing axle tubes.

If you're going to consider using a D35 I highly recommend a truss.

mudslinginjoel · « **Reply #4 on:** March 10, 2007, 08:37:42 PM »

If your planning to go bigger then 33's,I'd consider a swap in the rear.My buddy ruined a few axle shafts,then bent the axle tubes with 35's.The truss and super 35 kit may help though.

NS-jeeper · « **Reply #5 on:** March 10, 2007, 11:17:07 PM »

Where Would some one get a truss and how expensive would it be to have put in??

BlackYJ · « **Reply #6 on:** March 12, 2007, 07:30:22 AM »

Quote from: "NS-jeeper"

Where Would some one get a truss and how expensive would it be to have put in??

The only truss I have seen for the D35 was a bolt on one that had a built-in diff cover and looked like a real PITA to change the oil. You could very easily get one custom made for probably fairly cheap

Chase · « **Reply #7 on:** March 13, 2007, 05:54:37 PM »

I can't even count the number of 35's i have seen come threw the shop absolutely exploded, I blew mine up on 31's but that was due to abuse and neglect.... That truss you guys are talking about is made by Superior and is not worth the investment, it doesnt address the main problem of your weak ring and pinion....Don't go bigger than 33's

So far i havent blown up my dana 30 on 37's with arb...knock on wood

Bnine · « **Reply #8 on:** March 13, 2007, 07:11:48 PM »

Quote from: "NS-jeeper"

Where Would some one get a truss and how expensive would it be to have put in??

I'll build an install one for you. 100$

mudslinginjoel · « **Reply #9 on:** March 14, 2007, 10:25:00 PM »

anybody can make a truss,weld a plate standing up across the top of your diff,the truss is just there to help stop the axle tubes from bending.

frenchy · « **Reply #10 on:** March 15, 2007, 12:07:37 AM »

Quote from: "mudslinginjoel"

anybody can make a truss,weld a plate standing up across the top of your diff,the truss is just there to help stop the axle tubes from bending.

"anybody"?

I don't have a welder...
I'm just not sure if my hot glue gun beads will hold up to the abuse.... LOL

BlackYJ · « **Reply #11 on:** March 15, 2007, 07:12:04 AM »

Quote from: "frenchy"

"anybody"?

I don't have a welder...
I'm just not sure if my hot glue gun beads will hold up to the abuse.... LOL

Man c'mon, hot glue, that will NEVER work. You have to use DUCT TAPE

. I think you need to watch a few more episodes of Red Green

mudslinginjoel · « **Reply #12 on:** March 15, 2007, 10:04:07 PM »

ever heard of J B weld?,its pretty tuff stuff!

Bnine · « **Reply #13 on:** March 16, 2007, 08:30:12 AM »

Quote from: "mudslinginjoel"

anybody can make a truss,weld a plate standing up across the top of your diff,the truss is just there to help stop the axle tubes from bending.

Anybody can do a lot of stuff. But a lot of anybody's would prefer to have a somebody else do it. :wink:

Anybody can do brakes. I still do about 3 sets a month...........

BlackYJ · « **Reply #14 on:** March 16, 2007, 08:44:12 AM »

Quote from: "bnine"

Anybody can do a lot of stuff. But a lot of anybody's would prefer to have a somebody else do it. :wink:

Anybody can do brakes. I still do about 3 sets a month...........

Sweet Bill, I will drop my Jeep off so you can do the brakes. Also if it is not too much trouble could you change all the fluids and grease all the fittings

Author Topic: What is the largest tire that d30 & d35 setup can handle (Read 2284 times)

mudslinginjoel

Chase

mudslinginjoel

mudslinginjoel