A7x2706

Hey I'm about ready to get new tires and I need to know whether I have 3.73s or 3.21s. Someone said if u don't have max tow then you have 3.21s which I do not so any input would be appreciated thanks.

DKehler

Go to jeep.com, then the owners section, you can request a build sheet ans they will email you one pretty fast. I think mine took a day, or no more than two.

BagOfDoorknobs

That's pretty much it. I have a 2010 jku sport as well. If you didn't get the tow package, you have 3.21's.

grayandashleyunlimited

It really doesn't matter if you have the tow package or not. My 2010 had 3.73 w/o the tow package. There are other ways of checking to see what you have without having to call or wait for a sheet. You can jack the rear end up and turn the wheels to see. I will try and see if i can find this and then paste it here.

Jeremy072288

Mine came with 3.73s. I can't remember what the dealer called it, either "offroad" package or tow package but it didn't even come with a hitch lol

A7x2706

Anyone else ???i kinda need to know before ordering 35s.

AirJordan613

Just get the build sheet it's the only definite answer you're going to get without breaking out tools

JKbender

If you purchased it new then the window sticker will tell you. Also, my build sheet was with my owners manual so check yours.

However, in the end what you have does not matter much for where you are going. There are multiple post on this site that include a gearing chart that will tell you tire size and gearing on the axis then rpm at a standard mph.

A7x2706

I've checked it all and its not there I didn't buy it new its a 2010 the book only shows 4dr sport models with 3.73s and some 2dr with 3.21s I'm only doing flat driving as I live in illinois

ricksjeep10

I thought the 2010 autos came with 3.73 and sticks came with 3.21. Could be wrong. Build sheet is the way to go to make sure!