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Unread 02-18-2013, 05:44 AM   #1
Jamesromeos
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Torn Between tire sizes. Help!

I installed my 4" BDS lift in my CJ last week. I love the lift. Good stuff. I am torn between tires right now, I dont know if I should go with 35's or 33's. I dont do a hell of alot off road, but I dont want to be disapointed with 33's if they do not fill the wheel wells. Finally what about brands? I see some people running BFG, and alot of people running General. I think with the amount of offroad use this is going to see a all terrain tread would be better than MT.
Also, in the pictures she is running on 32x11.50's now. Can you fit a 12.50 wide tire on those rims?
Thanks in advance for your help

imag0176.jpg   imag0173.jpg  
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Unread 02-18-2013, 06:22 AM   #2
CALOcruiser
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I have 35s with 4" lift and extra 1/2" from shackles. They rub on fenders if fully articulated. Thats what happens when they fill the wheel well. I actually want to go down to 33s for that reason, and reduce risk of axle breakage.

As far as brand, BFG is my preferred but they are pricy. General is popular because they are cheap and have a knock off tread pattern of the BFG all-terrain KO, which is their AT2. I've read that General rubber is harder and not good in mud or snow.
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Unread 02-18-2013, 06:48 AM   #3
Jamesromeos
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What brand of shackle are you running/recommend?
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Unread 02-18-2013, 06:51 AM   #4
Matt1981CJ7
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James,

What gears are you running? Stock axles, or not? How about brakes?

Matt
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Unread 02-18-2013, 06:55 AM   #5
Jamesromeos
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Stock axles, 2 piece. Factory disc brakes in front, drum in rear, No brake booster
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Unread 02-18-2013, 07:06 AM   #6
roadhog304
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Quote:
Originally Posted by Jamesromeos View Post
Stock axles, 2 piece. Factory disc brakes in front, drum in rear, No brake booster
I would recommend 33's with stock axles.
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Unread 02-18-2013, 07:15 AM   #7
CJ_heath
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I have a CJ7 with a BDS lift and 33 12.50s.



I think it looks proportional.
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Unread 02-18-2013, 07:37 AM   #8
Matt1981CJ7
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Again, what gears are you running?

Matt
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Unread 02-18-2013, 07:42 AM   #9
Jamesromeos
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I have no Idea....I believe stock, Honestly do not know how to determine what gears are in the rear end. I can tell you that it was factory a 258, and has a t150 behind it. DANA rear end. Is there any "standard" rear end ratio's
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Unread 02-18-2013, 07:48 AM   #10
Matt1981CJ7
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Umm...your gears should be the dictating factor to what size tire you run.

Matt
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Unread 02-18-2013, 07:53 AM   #11
Jamesromeos
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How would I know what gears are inside?
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Unread 02-18-2013, 08:04 AM   #12
CJ_heath
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Reference this: http://www.jeeptech.com/axle/amc20.html

I'm running 3.31 with a TF999 auto.
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Unread 02-18-2013, 08:28 AM   #13
CALOcruiser
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Quote:
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What brand of shackle are you running/recommend?
M.O.R.E greasable is what I went with. 3/8" thick, gold colored zinc coating. I've been very happy with his products.
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Unread 02-18-2013, 08:34 AM   #14
WolfcreekCJ
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I am running 33 11.50 dick cepek on 10 X 15 rims with a 4in bds lift. I have a narrow track rear end and I got smome MINOR rub on th inside of the wheel wells and the tolerance was very close on the turning radius (rubbing the springs) I had a 304 with a t150 and the very Tall gearing. I think its 2.73 or somthing. It ran down the road fairly well but lacked much "pulling power". I wasnt doing any hardcore wheelin' but even in low range it had a tendency to go too fast and i was constantly "clutching" to slow down. still I had fun with it. The DC MTs are a less agressive mud terrain in my opinion than say super swampers or others and they were fairly quiet going down the road. that may change as they wear though. good luck.
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Unread 02-18-2013, 08:35 AM   #15
CALOcruiser
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Quote:
Originally Posted by Jamesromeos View Post
I have no Idea....I believe stock, Honestly do not know how to determine what gears are in the rear end. I can tell you that it was factory a 258, and has a t150 behind it. DANA rear end. Is there any "standard" rear end ratio's
you can determine the gear ratio by locating the stamp on the differential housing. If I remember correctly, it's next to the cover on a flat area just before the axle tube comes in. you will find a letter or two letters, depending on the ratio. then use that to look up the gear ratio. you will likely have to scrap the surface to read it.

here is the decoder ring.
http://www.jeeptech.com/axle/amc20.html

My ratio is 3.54, with solid axle conversion in rear, stock dana 30 in front. I have a t-18, with granny low, so starting off on a hill is not a problem. It rides great on the road and at highway speeds. it has plenty of power, but sometimes I can tell it lugs in low rpm range with those 35's without a higher ratio. I would still suggest 33's for your setup.
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