For a stock suspension Z71 Suburban, any idea what grade % would likely result in the truck tipping? Like an off-camber "road" where you're driving perpendicular to the slope. I don't want to get anywhere close to this, but sometimes it's unavoidable and it'd be great to have a general idea of the limits.
Steepest slope you can traverse without rolling
- Thread starter NOSOK
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On asphalt, 30 degrees is alot! Sooooo, book may say 40-50 deg, but if you slide sideways a foot ya might be teetering. Preferred way is forward at a 75 degree towards apex. Soft ground/ sand/ gravel/ ect. is pure experience. Any stupid mistake will cost you dearly. Look how many people roll over riding mowers!
I think a lot depends on how the truck is setup, loading, the driver, etc.
Only one sure way to find out.
Yeah 30 degrees is way steeper than I want to drive [sideways] on. Not surprised mowers flip - those have pretty narrow tracks and will have a terrible CoG thanks to the rider.
This came up the other day when my wife and I went hiking and I parked on the sloped shoulder. The iphone measured the hood at ~15° IIRC. That felt fairly safe but I've been curious about the actual limits. I did some searching around various offroad forums but it's not a common topic...
swathdiver
Full Access Member
If you get to that tipping point, cuss yourself out for getting in that predicament and steer down to try and stop the roll over, if you can.
When I was in the service on an aircraft carrier and in a major full blown storm at sea, that flight deck barely went off of flat, maybe 1-2 degrees list. Our smaller ship escorts, destroyers, were rocking and rolling and I know they went past 30 degrees. Looked scary for sure.
When I used to off road a lot I was at Moab one time on an obstacle called "Potato Salad Hill". Almost to the top and way off kilter and I rolled two complete roll overs and landed on all four wheels/tires. No fun, believe me.
When I was in the service on an aircraft carrier and in a major full blown storm at sea, that flight deck barely went off of flat, maybe 1-2 degrees list. Our smaller ship escorts, destroyers, were rocking and rolling and I know they went past 30 degrees. Looked scary for sure.
When I used to off road a lot I was at Moab one time on an obstacle called "Potato Salad Hill". Almost to the top and way off kilter and I rolled two complete roll overs and landed on all four wheels/tires. No fun, believe me.
It’ll be something in the range of 45 degrees or more. A lot more than most people will want to experience. The center of mass is pretty low in a stock vehicle. That would be in perfect conditions though.
What typically causes a rollover is something dynamic, such as bouncing over a high side rock, or a low side rut. And even on lesser slopes, if the surface is loose you’ll slip sideways and then when the tires catch something momentum will spill you.
What typically causes a rollover is something dynamic, such as bouncing over a high side rock, or a low side rut. And even on lesser slopes, if the surface is loose you’ll slip sideways and then when the tires catch something momentum will spill you.
Tozan
Overlander
While I will agree with Bill that 45 degrees might be a flipping point if you can maintain full traction but, in most cases you will not get the tires to stick that long...
On my Tahoe (4in. lift running 35's) I have been at 25 degrees (in dirt) before it started to slide sideways due to lack of side traction in the dirt. After pushing it a little harder we did manage to get it up on two wheels for a second when it slid down and hit a flatter spot. Those sudden stops after sliding down sideways are what you need to be careful of.
I would suspect with stock tires it may slide at a lesser angle but... The real hazard would be with an abrupt stop of it sliding sideways might result in a flip. In most cases it will start slowly sliding sideways long before it will actually flip...
So my two cents: Pay attention to the side slip when you start sliding, you are entering the danger zone regardless of the angle. The sudden stop is what will flip you.
On my Tahoe (4in. lift running 35's) I have been at 25 degrees (in dirt) before it started to slide sideways due to lack of side traction in the dirt. After pushing it a little harder we did manage to get it up on two wheels for a second when it slid down and hit a flatter spot. Those sudden stops after sliding down sideways are what you need to be careful of.
I would suspect with stock tires it may slide at a lesser angle but... The real hazard would be with an abrupt stop of it sliding sideways might result in a flip. In most cases it will start slowly sliding sideways long before it will actually flip...
So my two cents: Pay attention to the side slip when you start sliding, you are entering the danger zone regardless of the angle. The sudden stop is what will flip you.
Just Fishing
Can't fix stupid
Interesting topic, i have pulled off of the side of the road for an emergency pee.
it had quite the slope, and added more due to the road surface being much higher than the shoulder.
On a side note,
my last suv was a two door.
4 doors = much better privacy when peeing on the side of the road!
it had quite the slope, and added more due to the road surface being much higher than the shoulder.
On a side note,
my last suv was a two door.
4 doors = much better privacy when peeing on the side of the road!
Somewhere on the interwebs there are technical drawings and I believe they show max angles, it may or may not be shown in the upfitter guides. The angle of approach is probably less than what you can actually do anyway (stock)
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