LR4 Transfer Case and Rear Locker control

[bri]

I'm currently running 285/60/18 all-terrains on my LR4 which is 31.46" according to the manufacturer and 31.47" according to a tire calculator. I rub occasionally on the front frame horns. I ground them down a bit but I still touch occasionally. I'm planning on going with a 275/65/18 MT which is 32.09" according to the calculator but most manufacturers are showing more like 32.1 all the way up to 32.4. The General Grabber X3 specs at 32.07 so I may try those. I'm also researching the strut spacers (Lucky 8's SYA kit).

Are there not steering stops to avoid this rubbing. Guessing not.

 

[Howski]

Bri, you won’t even notice the various diffs locking/unlocking as they work lock step with traction/terrain control. You will notice the greater size and weight of these immediately and will take the most getting used to. I also noticed not feeling as connected to the suspension movement and have less ‘feel’ for the truck underneath you on these air sprung trucks.

 

[p m]

Certainly 3 tons of vehicle must be harder in that sand than D1.

The very first time I took my non-HD LR4 off pavement was near Mammoth Lakes, CA, in winter. On factory Continentals, it clawed its way up a 20-degree sandy road covered by 6" of iced-over snow. That was in Auto setting.
A D1 had zero chance of going up this grade.

 

[ERover82]

The very first time I took my non-HD LR4 off pavement was near Mammoth Lakes, CA, in winter. On factory Continentals, it clawed its way up a 20-degree sandy road covered by 6" of iced-over snow. That was in Auto setting.
A D1 had zero chance of going up this grade.

How about a D1 with equivalent tires and an ATB or two? An LR4 can play its TC tricks on smooth slippery surfaces well, but on hills its weight literally drags it down.

 

[Blue]

I did attribute stuck in the sand to weight as much, or perhaps more, than the tires. These LR4s are HEAVY.

 

[p m]

I did attribute stuck in the sand to weight as much, or perhaps more, than the tires. These LR4s are HEAVY.

They sure are. But even the factory tires at street pressure have probably 20% more of contact patch area, which is close to the excess curb weight.

 

[p m]

How about a D1 with equivalent tires and an ATB or two? An LR4 can play its TC tricks on smooth slippery surfaces well, but on hills its weight literally drags it down.

Once, by mistake, I almost ran Imogene Pass in high range.

 

[discostew]

Bri, you won’t even notice the various diffs locking/unlocking as they work lock step with traction/terrain control.

Sometimes you feel it and it’s pretty impressive how quick it applies the rear axle. I worked at a place where we parked on loose gravel you kind of turned into. The truck would get loose when you left asphalt. The rear diff locks and you feel it

 

[p m]

How about a D1 with equivalent tires and an ATB or two?

Not a chance.
I would say you had a better chance with TrueTracs and left foot on brake pedal, but ... no. You just don't have any idea which wheel spins and which has traction.

 

[Howski]

Sometimes you feel it and it’s pretty impressive how quick it applies the rear axle. I worked at a place where we parked on loose gravel you kind of turned into. The truck would get loose when you left asphalt. The rear diff locks and you feel it

I’ve seen a LR4 with the rear locker in action but haven’t driven one myself

 

[bri]

The very first time I took my non-HD LR4 off pavement was near Mammoth Lakes, CA, in winter. On factory Continentals, it clawed its way up a 20-degree sandy road covered by 6" of iced-over snow. That was in Auto setting.
A D1 had zero chance of going up this grade.

I get it! Pretty cool. I have experienced 20 deg down on ice with only mechanical and it is not a lot of fun.

 

[bri]

Not a chance.
I would say you had a better chance with TrueTracs and left foot on brake pedal, but ... no. You just don't have any idea which wheel spins and which has traction.

I understand.

Ice is worst case scenario.

I still would like "lock in" mode,

Left brake petal is the way.

What happens in LR4 with accelerator, brake pedal and TC on. Can you still use brake and accelerator and not defeat TC?

 

[bri]

Once, by mistake, I almost ran Imogene Pass in high range.

I have almost run a number of trails in high range.

 

[Blue]

You can always turn off TC and kick it old school!

 

[bri]

Bri, you won’t even notice the various diffs locking/unlocking as they work lock step with traction/terrain control. You will notice the greater size and weight of these immediately and will take the most getting used to. I also noticed not feeling as connected to the suspension movement and have less ‘feel’ for the truck underneath you on these air sprung trucks.

That's a good description, thanks.

 

[p m]

What happens in LR4 with accelerator, brake pedal and TC on. Can you still use brake and accelerator and not defeat TC?

That's a good question.
Theoretically, I don't know. Practically, left-foot braking is so ingrained in my mind that I am 100% certain I've done it in the LR4 - not in any crazy situations, but whenever I need some precision in wheel placement.

 

[bri]

That's a good question.
Theoretically, I don't know. Practically, left-foot braking is so ingrained in my mind that I am 100% certain I've done it in the LR4 - not in any crazy situations, but whenever I need some precision in wheel placement.

Observing the lockers under that situation is one of the first things I willdo... well at least what the screen tells me they are doing.

From what everyone is saying, my D1 is history (for me).

 

[bri]

Bri, you won’t even notice the various diffs locking/unlocking as they work lock step with traction/terrain control. You will notice the greater size and weight of these immediately and will take the most getting used to. I also noticed not feeling as connected to the suspension movement and have less ‘feel’ for the truck underneath you on these air sprung trucks.

Another note. I will notice if they engage too late.

 

[p m]

From what everyone is saying, my D1 is history (for me).

hehe.
Capability does not mean reliability.
I'll take my running-like-shit, beat-up, 372-kmi, Classic across the country before I decide to drive LR4 to Vegas.

 

[bri]

hehe.
Capability does not mean reliability.
I'll take my running-like-shit, beat-up, 372-kmi, Classic across the country before I decide to drive LR4 to Vegas.

Damn it.

I would have been fine without this post.