im looking into to getting some new tires, i wanna go with 36'' iroks, my issue is can my basically stock axles handle that big of a tire or do i need to upgrade.
i have a 91 sas ext cab. stock rebuilt front axle with tg highsteer.
am i gonna start breaking stuff right away. also my steering in stock too.

 

They should be able to handle it. but it doesn't hurt to look into investing in some new shafts. I'd say 37s are your max.

Your steering definitely isn't stock with highsteer. You'll have no problems with steering.

 

do you have lockers? i wheel the crap out of 35's and havent busted an axle yet but the birfs will be your weak link. with lockers you can snap stuff when your stuffed tire is basically glued to a rock and all the torque is going right there snap!!

 

meant everthing else is stock in steering, as in box and pump.i blew out a seal on my ps box when i but did my sas,with 33" swamper probably nothing to do with tire size
im finding a few sets of pretty much new 36x13.5 iroks,
i tried buying a new set of 35x12.5 goodyear mtr's but they stopped making them apperently and it will be a few months before they make the next batch ( this is what i was told from a guy at goodyear)

 

welded rear. i was locked front and rear with my ifs, first day wheeling it and i snaped a cv axle then i did my sas, and who wants a sas truck on 33's not me

 

I've seen folks run 39.5" boggers on stock axles but they didn't last long. Stock birfs just aren't meant for big tires other than at the mall.

:wabbit2:

 

I have seen people bust axles with 31" and 37" tires and others with 37" tires never have a problem on stock drivelines. A lot of it has to do with your driving style in my opinion.

 

^ And your location. Wet woods are alot more forgiving than dry rocks.

 

true! I am in Colorado lots of dry rock

 

you should b fine! Im in Oregon with 36 tsl sx and with a Detroit true track and haven't had a problem! u could brake but very unlikely

 

Just buy a set of longfields or Trail Gear Dirty thirty and be done with it! You might not break, but you're pushing those axles. I'd rather spend a little more money up front and not have to worry about having to swap axles on the trail.

 

I would definitely upgrade your front axles
..my dirty 30's (compliments of da wabbit) seem to be holding up great.
If you don't upgrade I would at least pick up a set of spare axles($100'ish) andpractice changing..they tend to implode when you don't expect it.

 

Very unlikely? I wouldn't go that far, stock birfields can last if driven on with them in mind but will eventually go most likely.

 

I run 35" tires and a Lock-Rite in the front. Never an issue with stock axle SHAFTS. Blew a birf 4 years ago uphill, reverse, full turn. Replaced stock BIRFS with Longfields stock swap 27 spline birfs. No issues since. Birfs were a little over $200 each. My 2 cents.

 

x2, i'm on 35's with a locked rear and open front. just take it easy on the gas pedal when your front is in a bind. i also carry spare birfs on the trail just in case, but i haven't broken one yet.
if you want peace of mind, get stronger front axle shafts and birf's, but if your willing to take it easy and change one out on the trail if something happens, i'd say your probably ok stock