Considering 40" tires - Wondering if my Jeep Can Handle It
03-05-2013, 06:37 PM
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03-05-2013, 06:41 PM
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I would stay 37s unless your going to the mall, I want 40s but Ive already snapped rear axles and had ball joints get worked my steering is getting hydro assist now as well....I'm about as built as d44s are gonna get it all goes to ring and pinion, drive shafts and axles ....
If you actually wheel and I mean get Into the rocks while questioning if your gonna make it not unscathed but right side up then I'd steer clear. If you wheel medium rocks and keep it smooth the tire size will make it easier to get on the ,medium stuff putting less strain on stuff as it rolls over versus stuck below the center of the tire...
I want d60s and 40s, but we wheel the crap out a 37s and go a lot of nasty spots just fine....
If you actually wheel and I mean get Into the rocks while questioning if your gonna make it not unscathed but right side up then I'd steer clear. If you wheel medium rocks and keep it smooth the tire size will make it easier to get on the ,medium stuff putting less strain on stuff as it rolls over versus stuck below the center of the tire...
I want d60s and 40s, but we wheel the crap out a 37s and go a lot of nasty spots just fine....
03-05-2013, 07:45 PM
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Originally Posted by jeepairforce
I am currently sitting on 37" tires with a 5.13 gear ratio, manual drive Jeep. I have swapped the front axle for a ProRock 44 leaving the rear axle as a dana 44. I have a 4" long arm teraflex and no body lift.
I am wondering if switching to 40's will put TOO much strain on the jeep for wheeling. Also, to make the tires fit, will going with a 2 inch body lift be wise? Or should I fork it out and go with an increase of 2 inches for the suspension?
Any comments would be appreciated. I wouldn't consider it, but I have a friend unloading some 40" MTR's for $200/tire with almost no wear on them.
Thanks forum!!!
I am wondering if switching to 40's will put TOO much strain on the jeep for wheeling. Also, to make the tires fit, will going with a 2 inch body lift be wise? Or should I fork it out and go with an increase of 2 inches for the suspension?
Any comments would be appreciated. I wouldn't consider it, but I have a friend unloading some 40" MTR's for $200/tire with almost no wear on them.
Thanks forum!!!
03-05-2013, 08:52 PM
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03-05-2013, 09:12 PM
#19
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With a 2 dr (lighter than a 4 dr) on 40s with built JK 44s, I broke a rear Rubi locker, then later blew a ring and pinion, then later bent both rear chromoly axle shafts.
On a lighter 2 dr, a built 44 front axle may survive a while with 40s, but the rear will not last.
With 40s on a 4 dr, I'd plan for a full float 1 ton axles if you are going to wheel it.
With a 2 dr (lighter than a 4 dr) on 40s with built JK 44s, I broke a rear Rubi locker, then later blew a ring and pinion, then later bent both rear chromoly axle shafts.
On a lighter 2 dr, a built 44 front axle may survive a while with 40s, but the rear will not last.
With 40s on a 4 dr, I'd plan for a full float 1 ton axles if you are going to wheel it.
03-06-2013, 12:55 PM
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WOW - Thanks for the response
Thanks everyone for providing me with your thoughts. I contacted a few axle shops and Prorock directly to get their opinion as well. Here is what Prorock said:
"The housing may stand up to 40's but the axle shafts won't. Even with a good shaft such as an RCV, we start seeing axle shaft failures with 38's. The unit bearing also wears out pretty quickly with the added leverage."
I have RCV's and hearing this from Prorock scares me. I may have to let this GREAT deal on tires escape me and stick with some 38's or 37's again. My jeep will remain the same height.
Thanks again everyone! Very informative.
"The housing may stand up to 40's but the axle shafts won't. Even with a good shaft such as an RCV, we start seeing axle shaft failures with 38's. The unit bearing also wears out pretty quickly with the added leverage."
I have RCV's and hearing this from Prorock scares me. I may have to let this GREAT deal on tires escape me and stick with some 38's or 37's again. My jeep will remain the same height.
Thanks again everyone! Very informative.