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post #1 of 14 Old 12-23-2009, 07:35 PM Thread Starter
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i searched first!!

ok i have searched all around and cant really find a specific answer. im planning on a 3.75-4 inch lift and was just wondering if i could run 35x12.5 on my stock rims? (09' unlimited sahara) will i need spacers? what size? i will be getting new rims at some point in the future.

i wheel on the weekends. not to hard now. but im sure bigger meats give confidence so my off road aggressiveness may change. lol

thanks in advance.

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post #2 of 14 Old 12-23-2009, 07:37 PM
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new drive shafts will be needed.

12.5" wide tire on a stock rim will work but you may not want to air down much. might slip the tire off the bead. you will need wheel spacers though.


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post #3 of 14 Old 12-23-2009, 07:42 PM
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Quote:
Originally Posted by Liquor View Post
new drive shafts will be needed.

12.5" wide tire on a stock rim will work but you may not want to air down much. might slip the tire off the bead. you will need wheel spacers though.
New driveshafts

I have seen guys on a 5.5 in lift rock crawling with the best of them on 37in tires with stock shafts yes new drive shafts are nice but not needed right away, but something you may want to budget for if one goes out on you.


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post #4 of 14 Old 12-23-2009, 07:43 PM
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Quote:
Originally Posted by savage_justice View Post
ok i have searched all around and cant really find a specific answer. im planning on a 3.75-4 inch lift and was just wondering if i could run 35x12.5 on my stock rims? (09' unlimited sahara) will i need spacers? what size? i will be getting new rims at some point in the future.

i wheel on the weekends. not to hard now. but im sure bigger meats give confidence so my off road aggressiveness may change. lol

thanks in advance.
Spacers run a 2in to a 2.5in on stock wheels

Give me about 2 months and I will sell you mine that I have had less then 6 months as I am about to get new wheels.



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post #5 of 14 Old 12-23-2009, 08:09 PM
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Quote:
Originally Posted by Liquor View Post
new drive shafts will be needed.

12.5" wide tire on a stock rim will work but you may not want to air down much. might slip the tire off the bead. you will need wheel spacers though.
I'm gonna disagree with just about everything he just posted.
new shafts are not needed with an unlimited on that much lift.
you may wear your stockers out a little faster so figure you have about 15-20k miles to get some new ones.
I've been lifted since the week I bought my Jeep, so 40K miles over 2+ years.
I'm still running stock shafts with ~6" of lift
I detonated a front rzeppa joint on one but I was running about 7.5" when I did. I replaced it with another stocker I got cheap off ebay.
New shafts are on my eventually list.

as far as the stock rims with 35x12.50s, I dunno why they would slip a bead easier than a wider wheel, the thinner wheel actually puts more pressure on the bead. I've run 35x12.50 mud grapplers on my stock rims for a year and a half and ~25K miles with more than a little off roading with no problems

The one part I DO agree with, is you will need 1.5" wheel spacers to clear the wider tires.
Look for something hubcentric, spidertrax have a great reputation and have worked fine for me since the 2nd week I brought my rig home.


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post #6 of 14 Old 12-23-2009, 08:24 PM
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guess i should have made it clear.

you will need new shaft eventually. especially the front drive shaft on a lift higher than 3". the boot will tear and after awhile the drive shaft will fail due to excessive wear and tear due to the angle the lift adds compared to stock.

if you change the drive shaft might as well get the rear done. others have not but know eventually they will need new drive shafts.

as for the tires, if you plan on airing down you will have a better chance at popping off the bead on a wider tire than a narrow tire. just weekend rides and not airing down you shouldnt worry. i too have heard this and went ahead and got 39x17x14.50 mounted on 17x8.5. no issues yet but i have beadlocks.

laugh and disagree guys, but both still plan on new drive shafts in the future...i would rather do it right the first time than fix it later.


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Last edited by Liquor; 12-23-2009 at 08:26 PM.
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post #7 of 14 Old 12-23-2009, 08:33 PM
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I dunno about all that
lots of guys still having aftermarket shafts fail or having to rebuild them pretty often.
I wheeled on stock shafts for close to 2 years, would aftermarkets have lasted longer? maybe, I dunno considering I popped a joint, not twisted the shaft.

I NEVER tore my front boot, I did cut down my skid plate to clear the shaft then switched to one that bodyguy cut way down, then I bent it, straightened it and reinforced it.

I did tear my rear boot a few months ago, but it was from getting hung on rocks, not chassis parts.

if you have an extra grand for new shafts right away, then great, but no they are not necessary

Wheeling is why we bought Jeeps, wheeling breaks stuff, so we replace stuff as it breaks.
Far as I'm concerned, stock shafts are a very safe and durable piece for a 4" lift.


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post #8 of 14 Old 12-23-2009, 09:24 PM
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you brought up a good point. the stock skid plate will rub the front drive shaft if not trimmed on an automatic transmission. i havent heard of a manual having this issue.

i have rock hard skids and did not have an issue with my build.


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post #9 of 14 Old 12-23-2009, 10:31 PM
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I would run a spacer to get full articulation. You only need a front driveshaft at this time.
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post #10 of 14 Old 12-23-2009, 10:36 PM
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Quote:
Originally Posted by venom View Post
I'm gonna disagree with just about everything he just posted.
new shafts are not needed with an unlimited on that much lift.
you may wear your stockers out a little faster so figure you have about 15-20k miles to get some new ones.
I've been lifted since the week I bought my Jeep, so 40K miles over 2+ years.
I'm still running stock shafts with ~6" of lift
I detonated a front rzeppa joint on one but I was running about 7.5" when I did. I replaced it with another stocker I got cheap off ebay.
New shafts are on my eventually list.

as far as the stock rims with 35x12.50s, I dunno why they would slip a bead easier than a wider wheel, the thinner wheel actually puts more pressure on the bead. I've run 35x12.50 mud grapplers on my stock rims for a year and a half and ~25K miles with more than a little off roading with no problems

The one part I DO agree with, is you will need 1.5" wheel spacers to clear the wider tires.
Look for something hubcentric, spidertrax have a great reputation and have worked fine for me since the 2nd week I brought my rig home.

x2.....I have a Teraflex 3" (measures 4" in height) and running 35x12.5x17 MTs on stock rims with stock shafts and using 1.5" wheel spacers. No issues. Same setup that I had on my 2 door as well (sold the 2 door).

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post #11 of 14 Old 12-23-2009, 11:21 PM Thread Starter
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i really wanna thank everyone for all there help! and i agree. we have jeeps to play with. replace things when they break or right before! no use switching some things out till you have to!

ill post pics when i decide and get it all done. im prob gonna just take it to jeffs jeep yard first of the year. he seems to be well liked on this site.

thanks again

2009 Unlimited Sahara
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post #12 of 14 Old 12-24-2009, 06:36 AM
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so to answer you original question... YES you will want to get some wheel spacers

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post #13 of 14 Old 12-24-2009, 08:07 AM
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You will need 1.5" spacers like mentioned above.

AT/MT not sure about the front DS. I wheeled mine with stock rims/BFG KM2's 37"-12.5" and 1.5" spacers no problem. I was also running TF 3" lift, which actually gave me 4" or more.


I will say you can get away with much more on the rear DS with a 4 door. After I installed my coilovers I measured out for new shafts and it was only about an inch difference from what I had. I slapped the stocker back on for a few days until my Woods arrived.

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post #14 of 14 Old 12-24-2009, 08:32 AM
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All I got to say is that running 12.50's on stock rims rock. I've been doing it for about 2.5 years and have over 45K with that setup. Oh yah, I usually air down to about 7 psi and sometimes lower. In my opinion the narrower rim actually grips better. And don't forget, we're only talking about a 1/2" less than the standard 8" that most people run.





You will need spacers, but don't worry about the drive shafts right away. They will eventually wear out, but they'll last a while.

Last edited by RotorHead; 12-24-2009 at 08:35 AM.
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