Best Tire Tread on front/rear, or damage TCase? (1 Viewer)

[2001LC]

I was told years ago by a tire shop; to put best tire tread on fronts or risk damage to t-case. Is this true and if so why is that?

 

[bucfl]

I would say different size would cause a problem. If you have a flat and your spare was smaller i can see that being a problem.

 

[gregnash]

I would say different size would cause a problem. If you have a flat and your spare was smaller i can see that being a problem.

Yeah I would say that if you for some reason have to run different size tires (donut vs. standard) then that would be the case. However, I have NEVER heard that running different tread patterns would do something like this?! I mean I guess I can see if you are running a super knobby MT vs. a highway tread tire but I highly doubt it would damage your t-case. Ultimately, you always want the best GRIP in front for steering in adverse weather conditions which would translate into have the tires with the most tread life in the front but that would be the extent of it.

 

[Julian Stead]

I was always taught to put new on the rear for handling purposes, as new tyres on the front can increase oversteer.

 

[2001LC]

Had a sharp punctured the sidewall about 13 years ago. Bought two new tires instead of 4. Discount tire rep, said the 100 is a 60front/40rear power transfer split. So was best to run new tread on fronts. They said I would risk damaging transfer case otherwise. Further said once the softer new tread worn off top layer (~30%), to then go back to rotating every 3K. I've never known if he knew WTF he was talking about. I have found it true, that, new tires loose the top layer very quickly and I feel more road grip.

I'm now look at similar situation and just don't want to cause an issue.

 

[Julian Stead]

Had a sharp punctured the sidewall about 13 years ago. Bought two new tires instead of 4. Discount tire rep, said the 100 is a 60front/40rear power transfer split. So was best to run new tread on fronts. They said I would risk damaging transfer case otherwise. Further said once the softer new tread worn off top layer (~30%), to then go back to rotating every 3K. I've never known if he knew WTF he was talking about. I have found it true, that, new tires loose the top layer very quickly and I feel more road grip.

I'm now look at similar situation and just don't want to cause an issue.

The 100 has an open center diff, I think the tire rep might of been talking about viscous coupler vehicles.

 

[Josie'sLandCruiser]

Hi all,

Utter BS. In a part-time 4wd system (Land Cruiser 40/45/55/60/70 Series) the front and rear axles are equal in power distribution, though honestly the rear "pushing" does more than the front "pulling" off road.

The 80 Series (US market) has a viscous coupling for the full-time t-case which can also be locked for equal front/rear power distribution.

I can't believe that a US market Land Cruiser 100 Series (UZJ-100) is any different. This is not a all wheel drive (AWD) car like a Subaru.

Regards,

Alan

I was told years ago by a tire shop; to put best tire tread on fronts or risk damage to t-case. Is this true and if so why is that?

 

[2001LC]

What do you mean it's not AWD like a ..?

 

[Josie'sLandCruiser]

Hi all,

Full time 4 wheel drive is not the same as "all wheel drive." The typical "all wheel drive" car/SUV bias power to the front wheels versus the rear. There is no way to equal power between the front and rear wheels.

A classic 4wd vehicle has equal front/rear power distribution through a part-time transfer case. Full-time transfer cases allow "slippage" front to rear via a viscous coupling for on pavement driving; but the transfer case can be locked for 50/50 power distribution.

Of course many modern vehicles also have "traction control," which further muddies the water.

Regards,

Alan

What do you mean it's not AWD like a ..?

 

[2001LC]

If I now understand it correctly; the 100 is more or less equal rear to front wheels power distribution, with slippage via viscous coupling to keep from binding up. Not a 60/40 spilt as I was told.

Thanks Alan.

 

[Julian Stead]

If I now understand it correctly; the 100 is more or less equal rear to front wheels power distribution, with slippage via viscous coupling to keep from binding up. Not a 60/40 spilt as I was told.

Thanks Alan.

Nope, land cruiser 100 is part time 4wd, it has a open center diff but you can lock it to get 50:50 front/rear. If you jack up a front wheel you will lose drive to all other wheels. But as mentioned traction control would confuse this as it would apply the brake to the wheel you have jacked up so power could be transfered to other wheels.

 

[duggy]

I think there is some misinformation going on here. For all intents and purposes, on the pavement, all full time 4WD Land Cruisers are 50/50 split and the open diffs will allow some slippage when turning. The 80 series has a viscous coupler and the 100 does not.

Offroad the explanations for "part time 4WD" is true since you are flexing your suspension and one wheel may not have traction. True part time 4WD means that you have a selector to switch from 2WD and 4WD and possibly locking hubs in the front.

 

[2001LC]

Will the real AWD, pleas stand up!