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Old 06-19-2011, 01:49 PM   #1
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tire size and budget boost

I have a 99 tj wrangler sport 4.0 and was wondering what's the largest tire i can fit without a lift kit. I was wondering if it is worth putting a BB kit on it for the extra space. This jeep is mostly driven by my wife on paved roads and never off road. It's stictly a cosmetic thing. Any input would be greatly appreciated.

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Old 06-19-2011, 01:53 PM   #2
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A BB and 31's looks great, and will work fine even if you decide to take it offroad.

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Old 06-19-2011, 01:54 PM   #3
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31x10.5r15
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Old 06-19-2011, 02:11 PM   #4
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Thanks Dave! One more thing to ask. Should i go ahead and replace the coils as well ,and if so,what type would you recommend to get the most height? Thanks again!
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Old 06-19-2011, 02:18 PM   #5
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A spring lift and a budget boost are two different animals. Although, to do the BB, which is alot cheaper, you have to remove your springs. I would spring for (pun intended!) a quality spring lift instead of the pucks. But, the more height you add to the Jeep, the more stuff you will have to replace to make it work. It all depends on what you are going to do with your Jeep, and how much you want to spend on it.
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Old 06-19-2011, 02:31 PM   #6
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Thanks again Dave! I'm basically just trying to get a larger tire size without having to change anything are modifying anything.I was just thinking ,if the springs had to come off anyway would it be worth it to replace them since they are the originals.There is no sag right now,so that's not a problem.The tires on there now are 30x9.5 it looks okay but something a little bigger would look better! Thanks again!
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Old 06-19-2011, 02:44 PM   #7
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How can you tell if the coil springs are sagging? What would be a way to measure, im sure the springs are meant to sag a specific amount from factory, but how much is to much?
I can lift my jeep up quite a ways before the tires are off the ground.
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Old 06-19-2011, 03:00 PM   #8
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The jeep itself for the most part is pretty level so i'm assuming there's no sag but we all know what happens when we assume! I'm just wondering if they're worth replacing seeing they have to come off anyway. I'd rather save a few bucks if I can.
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Old 06-19-2011, 03:05 PM   #9
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Im thinking the same thing Gene D, i am looking at doing the same thing as you.

I might go up to a 32 inch tire after seeing it on my 31s first. (with the 2 inch lift)

and if my stock springs are sagging ill spend the extra money to do a 2 inch spring lift instead of the 2 inch spacer lift, that way i gain a bit more then 2 inches
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Old 06-19-2011, 03:09 PM   #10
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I have 31's with a 2 inch BB
32's will fit but a little stuffed and could rub.
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Old 06-19-2011, 03:12 PM   #11
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Quote:
Originally Posted by Mr_RPM
Im thinking the same thing Gene D, i am looking at doing the same thing as you.

I might go up to a 32 inch tire after seeing it on my 31s first. (with the 2 inch lift)

and if my stock springs are sagging ill spend the extra money to do a 2 inch spring lift instead of the 2 inch spacer lift, that way i gain a bit more then 2 inches
I won a set of stock springs on eBay for a penny lol. I've done some reading, from what I got they don't really sag. My BB has been on for 6 yrs and still sits higher then my friends Tj stock.


Oh and I think there is a sticky on jeep forum that gives spring hights compressed

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Old 06-19-2011, 03:15 PM   #12
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I hear ya RPM! I really don't know which way to go with this! I drive the jeep sometimes too ,so I don't mind spending the extra money for better coils if it's worth it. On the other hand, if I can save a few dollars then why not. The bigger tires do look better but I just don't want to start changing everything else. So i'm figuring, maybe a 2" BB and then just go with the biggest tire I can.
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Old 06-19-2011, 03:17 PM   #13
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By the way kjeeper10, thanks, and nice looking jeep!
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Old 06-19-2011, 03:19 PM   #14
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Quote:
Originally Posted by Gene D
By the way kjeeper10, thanks, and nice looking jeep!
Thanks
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Old 06-26-2011, 02:15 PM   #15
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I'm thinking of going with 32x11.50 tires. I was wondering if this tire is too heavy for the stock rearend for 99 jeep wrangler 4.0
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Old 06-26-2011, 02:32 PM   #16
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Quote:
Originally Posted by Gene D
I'm thinking of going with 32x11.50 tires. I was wondering if this tire is too heavy for the stock rearend for 99 jeep wrangler 4.0
They aren't too heavy till 35" tires (that's if you have the stock Dana 35) here's a 2"BB and 31s
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Old 06-26-2011, 05:37 PM   #17
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Originally Posted by Redjeepmormon View Post
They aren't too heavy till 35" tires (that's if you have the stock Dana 35) here's a 2"BB and 31s
just wanted to say, love your jeep. That is the look Im eventually going for. I got my 2in BB lift but ran into problems installing yesterday now gonna just take it into the shop.
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Old 06-26-2011, 09:23 PM   #18
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Did a 2" BB on my 98 a month ago. Zone off road has some good instructions, just don't take the track bars off, and take the lower sway bar connects off, not the top (tapered fitting, a "B" to take apart). Jack stands, 3+ ton floor jack, air tools help greatly if ya got them. Start soaking nuts/bolts with PB Blaster asap. Took me atotal of about 8 hrs, rear took about 1 1/2 hours.
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Old 06-26-2011, 09:27 PM   #19
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just wanted to say, love your jeep. That is the look Im eventually going for. I got my 2in BB lift but ran into problems installing yesterday now gonna just take it into the shop.
Thank you Good luck with the BB
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Old 06-26-2011, 09:52 PM   #20
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31's on a Teraflex 2" BB... Perfect combo for this stance in my eyes...
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Old 06-27-2011, 05:26 AM   #21
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Thanks redjeepmormon. I appreciate the help. Nice ride.
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Old 06-27-2011, 05:50 AM   #22
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A quality lift spring like OME, or BDS ride better then stock and aren't that much more money for what you get! When you do a suspension lift of any kind you should replace your shocks as well.

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