What hills have given you problems on 37"s?
Mine goes right up this. From the driver seat:
From the following rig:
Cresting the top:
Ah! Thats not dirt.... Just say'n
How important are 37" tires? (1 Viewer)
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Ah! Thats not dirt.... Just say'n
Wow guys... Yes 37's will work with stock gears. I promise the truck will still move. However, you will be doing so with a lot more heat in the trans due to it working harder. IMO, you should regear with 35's as well. That is the downward spiral of modifying a vehicle...
Back to the original questions: No, 37's are not "needed". But then again, most mods aren't. That being said, I wouldn't go back to anything smaller. 37's just work for what I choose to do with my 80. It all comes down to what your needs are. Everybody will have there own opinion on what is best. Use your rig the way you want to use it and upgrade as you feel neccesary.
Back to the original questions: No, 37's are not "needed". But then again, most mods aren't. That being said, I wouldn't go back to anything smaller. 37's just work for what I choose to do with my 80. It all comes down to what your needs are. Everybody will have there own opinion on what is best. Use your rig the way you want to use it and upgrade as you feel neccesary.
jfz80
Cruisin’
Ive run the Irok radials at 36 x 13.5 R17 on tundra rims and loved every minute. Can flex to the fullest and still keep my fender flares on a J/4'' lift. Got a lil rub on the rear frame rail and thats all (due to the 5.5bs of the tundra wheels)
Now I will say I liked the traction of my previous Trxxus and current KM2's better.
Plus this particular tire measures 36.9 compared to their 37'' tire that measures 37.0'' and its 6lbs lighter per tire.
4WD Toyota Owner Magazine
SILVER Star
The comment on gears is valid. We run 5.29 with excellent performance on and offroad.
On a trail like the Rubicon, an 80 on 35s will go most anywhere an 80 on 37s will. But the 37s driver will be a lot less tired at the end of the day.
Moab? We've all seen unlocked FJ40's on 31s out there. Stock rental Jeeps do those trails. Rubicon style trails, lotsa rocks, bigger tires help.
On a trail like the Rubicon, an 80 on 35s will go most anywhere an 80 on 37s will. But the 37s driver will be a lot less tired at the end of the day.
Moab? We've all seen unlocked FJ40's on 31s out there. Stock rental Jeeps do those trails. Rubicon style trails, lotsa rocks, bigger tires help.
There's lots of real benefit, you should go to at least a 35
. 33s are for mall cruisers.
What hills have given you problems on 37"s?
Mine goes right up this. From the driver seat:
From the following rig:
Cresting the top:
I have never had 37s on my rig so the only thing I can really speak to is how mine feels on 285s. IMO the gearing on even a stock 80 is just a little too high. I have had 3 minis, an 85 PU an 86 4RNR an a 90 PU. with all those trucks, even on the steepest descent all I had to do was leave it in low 1, and let gears and engine do the braking for me. With my 80 I find myself on the brakes often, on even mild descents and ledge drops. To me applying brake = loss of control in these situations.
Even my
s 04 Tacoma with stock gears auto trans and 285s is geared lower than my 80.All that being said. Would I trade my 80 for another mini. No way. The 80 is a beast comparatively. Will I go to 37s before I get gears? Most likely
It's just in some situations, I feel the gearing is too high.
As far as wheeling on slickrock I think this says it all Crown Vic on Hell's Revenge- Moab, Utah - YouTube
That's kind of like saying wheeling in dirt is the same thing as driving on a dirt road. Most of Moab isn't a smooth dome that doesn't challenge your angles.
Personally, I want gears in Moab more than most places, because the slickrock gives you enough traction to get up and down steep grades you simply won't see anywhere else.
I run 850J in front and 863 in the rear. With 315s on I would get looks from people who could tell what I was running but other than fellow off roaders no one can tell there big. 80s swallow tires! I take off the 315s and go back to stock then everyone including random people start telling me the truck is huge. 37s give the truck the look of big tires. 315s look natural on that and anything under just looks small.
I just found it funny how 315s draw no attention yet stock tires on an 80 with a lift make it look tall. In the upcoming weeks I should be getting 37s. I do not need them, my 315s got me everywhere I pointed the 80. I want them because I think they look right and if the 80 went everywhere on 315s then now it will go there even easier.
I just found it funny how 315s draw no attention yet stock tires on an 80 with a lift make it look tall. In the upcoming weeks I should be getting 37s. I do not need them, my 315s got me everywhere I pointed the 80. I want them because I think they look right and if the 80 went everywhere on 315s then now it will go there even easier.
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I agree that there are trails in Moab that you can take rental heeps or even a crown vic on. But if you believe that all trails are like that, you need more exploring time in the area.
Why? I see brakes as a tool to control wheel speed, rig speed, act as a "quick/cheater locker" to maintain traction, etc. I two foot wheel, so use them almost as much as the throttle on the trail. Going down hill in a big heavy station wagon is going to require brakes, regardless of tire, don't use the brakes much, if any more on the 37"s than did on the 295's.
Agree that the '80 is somewhat under-geared, but it is what it is and actually works pretty well.
The auto helps, if it were a standard trans, it would be a bigger problem. I have owned a set of 5.29 gears for a longtime, they are sitting on the shelf, someday I may even install them? But the rig works and I prefer wheeling to wrenching. Believe it or not, my rig has also gone downhill, using the brakes for smooth, even control, as they were designed to work.
If there was a simple/cost effective tcase option out there all of the gearing problems would be solved. Spending the big bucks on gears most of use won't do, and playing with with tcase is much easier than re-gearing the axles in my eyes.
That's where I've always been jealous of Samurai - gearing the T-case and lowering the high range and low range at the same time.
Or you can just do the 5.29's. Case gears aren't cheap, and lower diff gears are nice, if not required, onroad. There is no reason to overthink this stuff - 5.29 is a low gear ratio and it works very well in all conditions.
I agree that there are trails in Moab that you can take rental heeps or even a crown vic on. But if you believe that all trails are like that, you need more exploring time in the area.
Why? I see brakes as a tool to control wheel speed, rig speed, act as a "quick/cheater locker" to maintain traction, etc. I two foot wheel, so use them almost as much as the throttle on the trail. Going down hill in a big heavy station wagon is going to require brakes, regardless of tire, don't use the brakes much, if any more on the 37"s than did on the 295's.
Agree that the '80 is somewhat under-geared, but it is what it is and actually works pretty well.
Believe it or not, my rig has also gone downhill, using the brakes for smooth, even control, as they were designed to work.
Yes, I was mostly just playing devils advocate. Unfortunately my slickrock experience is limited to a couple of large granite slabs in San Diego Co. If I ever move back to the mainland, Moab is at the top of my list.
I had only ever wheeled minis before, and there is definitely a learning curve to wheeling a large, heavy truck like the 80. I have just recently started using the two foot technique, mostly on steep loose uphills so I can stop the truck as soon as I lose forward momentum.
There is one really steep loose downhill here, that I have taken in the past. It has a long run out at the bottom, so I haven't used the brakes. I just let the truck go. I will try to use a little light braking next time, and see how it goes. I'll get some pics next time I am there. Thanks always for the pertinent info
I have had a set of 37's sitting in the corner for a while waiting on time to install and make room for them. After reading this thread and hearing things like "my 37s on tundra rims clear" makes me wonder if I should believe reports on here that say they fit. I'm on 33's, stock wheels, 850j/863 springs, and procomp shocks and rub rear inner fender well.
Basic math: wheels; 1" less backspacing + .5" wider rim means same tire would be 1.25" farther away from inner wheel than tundra 5.5 bs, 7.5 width rim.
Plus my tire is more narrow and shorter. Does mine flex that much better or it just gets flexed?
Basic math: wheels; 1" less backspacing + .5" wider rim means same tire would be 1.25" farther away from inner wheel than tundra 5.5 bs, 7.5 width rim.
Plus my tire is more narrow and shorter. Does mine flex that much better or it just gets flexed?
maxamillion2345
Franken-80
If you have got to ask... you don't need them.
itbrokeagain
SILVER Star
Very. I went places last weekend that a smaller tired vehicle would not be able to. I would like to go larger like possibly 39.5 but I don't want to deal with everything that comes with going with tire that big
