37s - anyone done it?

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May 14, 2011
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Hi all

Keen to try fit a set of 37x12.5s. Read a few older posts on here but has anyone done it now? Be great to undstand BL size and/ or trimming needed... A new set of high clearance fenders would be great...

Thanks
 
What's your goal? There are much better crawler rigs out there than that 100. We're more of an Expo/Overlanding crowd. That said, 35's are the largest we see commonly used here. I'm at 34.5" and I can't imagine needing a larger diameter for my mission.
 
There is no limit to the power of deep pockets.
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For the most part it is a pretty unrealistic endeavor. But, not impossible. You will need to either do a SAS, have a custom lift designed like those that Extreme Landcruiser does. http://extremelandcruiser.com/store/index.php?main_page=index&manufacturers_id=18 (another bag of worms in itself) or something like a 100 series body on an 80 series frame....

The only person I know for a fact that has done this in the States is Podvin.... but the post with information isnt available any longer... or my google foo is weak.

As noted above, with deep enough pockets anything is possible.
 
wildsmith ran 40mm of body lift with 12.5"x36" tires. The achilles heal in all of this is the durability, or lack of really, regarding the steering rack. If only there was a more robust rack...

A750F + 5.29's + Marlin's 3:1 gear set + 37" = mo cash and a very slippery slope

:D

Related: I believe Joe Bacal is running 2.5" of body lift on his race LX570 with 37" tires and IFS. I imagine he averages one rack per race ;)
 
Just looking at the clearance with 35's and trying to get an additional 1" clearance (2" diameter) on the front, I would think one would need to cut/reshape the firewall/footwell back a little, lose or relocate the washer bottle & 2" body lift.

The rears should fit 37's fairly easily. I don't believe there are rear drop-in aftermarket 5.29 gears. You'd have to do the hybrid 80/100 rear diff to fit 80 series, 5.29 gears. But I believe the front 5.29 is available.
 
If you read this guys post, his English doesn't sound that perfect (no offense). Which means he probably lives far far away. Jules is a French name, do they have 105's over there?

So I'll ask, do you have a IFS 100 or SA 105? IH8MUD is 98% IFS trucks (100 Series board).
 
Podvin had 4" of body lift from what I read
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@Julesc: Don't listen to the naysayers. Follow the good advice and ignore the rest. Just do it. Once more guys like you start taking their trucks to the next level, vendors will catch on and produce kits for the masses. Let it rip buddy. Someday when I can buy a bolt-on kit in a box to run massive tires I will thank you.
 
@Julesc: Don't listen to the naysayers. Follow the good advice and ignore the rest. Just do it. Once more guys like you start taking their trucks to the next level, vendors will catch on and produce kits for the masses. Let it rip buddy. Someday when I can buy a bolt-on kit in a box to run massive tires I will thank you.

I don't think anyone here said it can't be done.:rolleyes:
 
unless there is a hidden top secret upgraded rack and pinion on that truck, I wouldn't drive that anywhere remote. I remember seeing Podvin's trailer in Moab with these trucks on them...they look cool, but I think that was the point, looking cool and pushing the styling envelope.
 
Every truck has that point - that point where "bigger" no longer means the same process (springs, tires, body lift) but just more of it. 37s on a 100 is definitely past that point. Pretty much everything south of the motor will need to be replaced or heavily modified. But hey! This is 'merica! We've been lifting Corvettes and golf carts for decades! Get out that torch... and credit card and get on it!
 
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Reviving an old thread to find out if 2 years on, whether anyone else has done or tried it...?

I've spoken to Alan Podvin and his view was running 37s presents no major issues in terms of reliability. A 4 inch body lift is required but if your not into fabricating your own, there are some pretty comprehensive kits available from Japan that address issues such as the transfer leaver, steering column, bracing, bumper and radiator brackets etc.... Arctic Trucks also use a 4" lift together with their wide arches to accommodate up to 44" tyres. A 4" body lift will also clear 37s with stock suspension, albeit with a little body modification as per 35s and some Timbren bump stops, or you can add in a small suspension lift as well.

Just curious to hear people's thoughts as I am hoping to go this way.....
 
I'm excited to see if you go down this path. I remember a couple of years ago when naysayers were doubting if 35s can be run and plenty of people run them now.
 
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