Calgary Jeep Association
4x4 Related Groups => Tech Talk => Topic started by: Sprockett on January 23, 2009, 06:16:00 PM
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4L YJ with a dana 30 front diff with arb air locker and stock steering components lifted 5"
Is 35x12.5 too big a tire as far as reliablity is concerned? What's the risk? stressing the diff or stressing the steering?
Thanks guys,
Ryan
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i'll be running that setup soon enough. should be strong enough for the most part. right now i'm running 36s.... whats your rear axle? i'd be more concerned with it if its the stock D35..........
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Dana 44 with arb locker.
Do you mean that you will be downsizing to 35" front tires?
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haha, all the way around. i am running 36s but looking to downgrade to the 35s. will be easier on the street as well as stock front driveline parts, steering etc......
but so far i haven't had any problems with teh 36s but haven't really used it hard though either
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but so far i haven't had any problems with teh 36s but haven't really used it hard though either
ya big sissy.
Johnny is "downgrading" so he can drive his YJ on the street more. If it is a trail rig.... GO BIG OR GO HOME. Right Bill?
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Unit bearings. When I daily drove my XJ on 31s I went thru unit bearings like crazy.
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Sorry, that didn't come out right. I wasn't suggesting just the fronts :P
Is bearing failure accelerated by larger tires? Truth is, I'm considering going smaller for the same reason. I need to drive the jeep to work 25kms round trip 5 days a week in the winter. I doubt I plan to go wheeling anywhere that 33s won't take me for quite a while.
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The D30 in the YJ is strong enough to handle 35s but the weak point will be the u-joints unless you have the larger 297 joints. As for reliability, larger tires cause all the front end parts to wear faster especially the bearings and ball joints. Right now I am running 33x12.5s on my YJ and I have had the same unit bearings for about 3-4 years now and I drive it a fair bit. However, when I had my 31s, I went through a few sets. Unit bearing life is a balance of tire size and wheel offset
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The D30 in the YJ is strong enough to handle 35s but the weak point will be the u-joints unless you have the larger 297 joints. As for reliability, larger tires cause all the front end parts to wear faster especially the bearings and ball joints. Right now I am running 33x12.5s on my YJ and I have had the same unit bearings for about 3-4 years now and I drive it a fair bit. However, when I had my 31s, I went through a few sets. Unit bearing life is a balance of tire size and wheel offset
i have an 03 tj what should i do about this as well
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Ok, still debating this in my head. Let me ask another question:
What advantage do 35" diameter give over 33" besides to obvious 1" clearance?
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You could get some 31's for the street and save your 35's for the weekend warrior adventures.
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You could get some 31's for the street and save your 35's for the weekend warrior adventures.
Good point. Consider the cost of a set of 31's with rims as a percentage of the whole cost of the rig....getting some with street manners for tread will be cheaper than offroad tires, better on mileage, and changing the tires over will only be a matter of taking some time. :)
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You know, this is actually something I had not considered but should. Besides the how funny the 5"+ lift would look with 31s, theres little downside if the only concern is street manners.
However, the durability on trail with 35s is still a question in my mind over the advantage to the 35s vs 33s
Thanks for the input!
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However, the durability on trail with 35s is still a question in my mind over the advantage to the 35s vs 33s
The short answer is it all depends on how much stupid pedal is used. I have seen guys run 35s/36s, locked on D30s and D35s with no problems and on the other hand, I have seen guys break stuff with 31s.
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ya big sissy.
Johnny is "downgrading" so he can drive his YJ on the street more. If it is a trail rig.... GO BIG OR GO HOME. Right Bill?
i am a big sissy trev lol u got me!!!!
2 sets of tires is a great idea..... i've done it many a time........ 31s won't look that bad. nor would 33s. there are usually some sets around. that'd work out pretty good
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i broke lots of stuff when i had 31's then went to 33's and broke alot less lol
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ya big sissy.
Johnny is "downgrading" so he can drive his YJ on the street more. If it is a trail rig.... GO BIG OR GO HOME. Right Bill?
This coming from a guy who has 4 Jeeps, 3 of which are street queens.
Two sets of tires sounds like a good idea, except for the fact that it might look a bit odd depending on the lift and size of the second set.
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Ahhhhh... yes, my little apprentice, but, I will always be able to drive my own vehicle. Not a big fan of having the DD as the off road toy.
I am TRYING to sell the one Jeep that was meant to be modded, damnit!!
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if you build it they will come.........................................
and buy the XJ
sniff sniff, i smell a TJ long arm kit...........
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If its the dana 30 reverse cut high pinion, should handle 35's. Chrysler 8.25 is good for the rear, shafts are almost as big as the dana 44. Get a hub lock kit for the front axle, good back up plan for wheelin, that extra inch makes a big difference. I'm soooooooo sick of getting hung up on my axles, cut the lip off my 8.25 and upgrading to 35" TSL's this spring. The 33" claws just don't cut it, they throw lots of mud but they do not dig! Good for pictures though! I've followed guys on 35's and 36's that coasted through ruts then I come through and I'm stuck, sitting on the axles again.
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Unit bearings. When I daily drove my XJ on 31s I went thru unit bearings like crazy.
What are unit bearings? Are these like wheel bearings on a car with IFS? What you just wrote scares me as I have an XJ soon to be on 31's. :o
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What are unit bearings? Are these like wheel bearings on a car with IFS? What you just wrote scares me as I have an XJ soon to be on 31's. :o
You need to get a whole new unit everytime, bearings are pressed into the hubs...
Don't worry mang! I did both front bearings after about a year of hard wheeling...and they arent too too bad to replace, just a little stickie sometimes!
8)
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Ya like S-fly, i recently downsized to 31's from 33's just for on raod drivability. Can someone explain why this would cause more crap to break? Also, how much are unit bearings when they do need to be replaced?