To fit 37's(which I think is possible) You will need a minimum of around 7" of lift (3-4" suspension + 3" BL) You would also need to do a lot of cutting on the back of the front wheel well. The problem I see, is that without the perfect offset wheels, you would have to cut the back of the fender all the way to the door...and use a BFH to massage the firewall out of the way.

In reality it is doable...but not without a lot of "modifictaion" Again, it will depend a lot on the offset of the wheels. I know with my 33's and around 6" of lift I still rub and full lock and compression. Can't imagine how much more I would have to do to get 37's to fit.

I'm pretty sure that i can get 37's to fit on my trooper.
not that I'd really want to. But it would look pretty neat. <img src="/forums/images/graemlins/pfft.gif" alt="" />

what exactly is the point of getting 37s on the ifs anyways. Even if you put them on there has to be no way that the thing is going to do anything but cruise the local mall and say I did it. there will be no articulation, a speedbump may get your rear in the air if you take it at an angle <img src="/forums/images/graemlins/butwiggle.gif" alt="" />. other than to say you did it, I just dont see the point. Do the axle swap and then dont even think of all this

ditto <img src="/forums/images/graemlins/rolleyes.gif" alt="" /> sounds like a waste of time to me.


but since you asked, it wouldn't be a first...
IFS Rodeo on 40's:
http://www.pirate4x4.com/forum/showthread.php?t=369710

-Rob

I think if you regeared it would be fine (IF you could find a set of 5.38's for the front), but you would really have to drive smart on the trail to keep from destroying the front end. heavy duty tie-rods would be a must.

aluminum wheels and a radial tire would keep the rotating mass down. I wonder what the difference in weight would be between a 33" bias tsl on a steel wheel and say a 37" mtr on an aluminun wheel?

and if you did it right you would have the same amount of articulation as with a smaller tire, but this way you would have more ground clearance.

the only thing you couldn't cut or 'move' that might interfere would be the frame.

not saying it's the best idea, but it's your rig and you will learn from it whether the outcome is good or bad.

I think the only time where you'd really need to use 37's would be in a snowy place, Like the troopers in Iceland.
35's are pretty much the limit without lifting the front(not TB crank) like toyota lift kits.

yea, but to keep that setup intact, its going to greatly limited the trails you choose to get on. sure, you can probably baby it through the stock-moderate trails and not run much of a risk, but thats going to be little more than driving on a dirt road for a rig that size. To get on trails anywhere close to challenging would spell certain distruction, even if you stay off the throttle and try to ease through it.

IMHO, this is still a horrible idea for anything but a street queen. I drove 35's with the IFS for a short time and things felt incredably weak. I've been on 36's and now 38's with my SAS and couldn't image driving those tires on the IFS.

-Rob

just playing devil's advocate <img src="/forums/images/graemlins/evil.gif" alt="" />

I don't think its as bad as you make it out to be. Theres a handful of people on this board running 35s on ifs without breaking stuff on every trail. You witnessed me break a d44 shaft but my cv's survived. Yeah I broke a tie rod too, but thats what the tie rod shields are for. They just didn't do me much good sitting in my toolbox. <img src="/forums/images/graemlins/notooth.gif" alt="" />

Now I really wouldn't want to go any bigger, but I think 37s are possible for street/snow/maybe mud. Its gonna wear out every suspension part faster though.

True, but the steep incline of the trail you were on kept the front end light and transferred most of the weight over the rear. And when the tie rods let loose, that absorbs force otherwise transfered to the CVs. if your tie rods held, its possible the CVs could have gone.

I was running tie rod shields when I'd break CV's with 33's. I was also running them while I had the 35s. I'm not trying to give 35's a hard time, but there are enough stories here about people trashing the IFS routinely with smaller tires. 35's is only going to make that worse. 37's I'd say don't have much of a place with the stock IFS if you wanna wheel your rig at the level its capable of. street, sure, not a problem. mud/snow often require lots of wheel speed, which you'll be fine with until you catch a little bit of traction and parts start exploding.

i've seen enough chevy's running 44's on stock 10-bolts and jeeps running 37's on stock D35s... an isuzu IFS on 37's is not all that different IMO. can it be done? sure. is it a good idea/will it ever be reliable? nope.


-Rob