my tag says *** u, what does that mean?

 

Really nice... Lol I thought it said 3.31 it says 3.55! 😁

 

🤓 Glasses...wear them!

 

i do lol, but anyway so I have 3:55s. And my speedo is waaaaaayyyyyyy off from the tires. Like 10mph off

 

I have 32s on 3.55, seems to be off by about 5 mph. Really haven't looked to much into it. There are new gears you can load onto the seepdo sending unit to correct the gauge. There's a chart somewhere around here on the forums to help you choose which sending unit gears you need. Sending unit is mounted on the transfer case.

I happen to be working on mine at the moment, here ya go:

 

Oh shoot man I forgot you have 32s on this XJ haha

you could do what curry is suggesting, but if this is going to be a trail rig, I would swap gears now and that should help the speedo. I believe it's 4.10 for 31s and 4.56 for about 33 inch tires.

 

I am turning this into a daily driver that can do really good off road and ok on the road. So if I do like Curry says that will be better for daily road driving, but if I regear it that would be more beneficial for off road use.

 

you'll still be undergeared for daily driving. Regearing is beneficial for both on and off road with your setup now

 

hmm, how bad would regearing cost?

 

Well a friend of mine regeared his wrangler at a local shop before summer. I think it was like $1200. Remember you have to do both axles. Of course rehearing is justv my opinion. It seems curry is still at stock and others here as well I believe even at 33s. However, regearing will help with gas milage and help with the bigger tires. There's a member on the head forum named Fred. He says something along the lines that regearing for your appropiate tire size returns your jeep to factory. Regearing makes your jeep with bigger tires run like it would on stock tires.

 

more pep! My Jeep with the wrong gears feels a little under powered. 32 is as big as I would go without re-gearing. If I put 33s on, I don't think I would like it much. I will re-gear eventually to the right gears for my 32s.


@ Ironside
Also to be considered, only re gear when your happy with your tire size, it does take some deep thought and inner soul searching to finally get on your roof and scream "I have ___ tire size and I'm happy with it!!!". After you feel you could do that, that's is when you're ready to re-gear. It would really suck to get the gears then want to go down or up a few tire sizes.

My Jeep, I call him Spartacus btw, is on 32s now and I'm happy with it. My build is aimed more at a moderate off-road/camping/overland vehicle. I'm not interesting in climbing rocks bigger than my house or going through water as deep as my Jeep either. My aim is a nice heavy duty, mid type build.

In closing, find out what you want Ironside to "be" and the rest will fall in line. Happy New Years!

 

You know besides that tag there's another one on the axle tube side, I don't remember off the top of my head but on the passenger side front of the axle shows a label for what gears and if it's a open/trac lok axle

 

Good suggestion. You can also look on the rear diff as well. Front and Rear ratios must be matched. Whatever is in front, is also in back and vice-versa.

 

So I went and confirmed it's a 3:55, However there is bad news. My parts Jeep is complete junk, body rotted, floors gone, mirrors broken, windshield is junk, grilles busted, the only two good parts on it are the header panel and the drivers front fender. So I didn't end up buying it. But now I'm going to part up my dad's parts jeep Cherokee that is the same year and everything, so hopefully that goes better

 

Regearing is sooooo nice. Sure, it's costly but it'll give you more performance than any other modification you could do for power. I ran 33's on my stock 3.55's and figured I wasn't going to stay on those so threw on a set of 35's thennnn decided it was time to regear. I didn't like how hard the transmission had to work and it really sucked for crawling in the rocks. Best mod I did was regear. My speedo is only off by 5mph with 35's and 4.56 gears.