JT II's 34*11.5 vs ET's 35*10.5 vs Boggers and IROKS

[Jay]

Currently ran 32 ET's found them unbeatable in mud however sucks in virgin snow and rock crawling.

How would you guys rate the JT II's 34*11.5 in mud,snow and rockcrawling? Does the tyre give a wider stance and flotation?
How would you compare the JT'II to Boggers and IROKS?

Thanks
JAY

[p76rangie]

Jay, I run JT2s 33x10.5x15 and found them good in the snow and mud. I have only done limited rock, but they seem to go OK. What tyre pressure do you run in your ETs.

Ian

[ISUZUROVER]

Hardly any boggers or iroks here (almost none in fact).

The simex's are preferred by the people in the southern states where there is more mud and less rock, in queensland it is drier with more rock people tend to run MTR's, swampers (Q78 type pattern) and some of the comp rigs have started running BFG krawlers.

The MTR's I run do really well on rock and wet rock, and OK in mud, from what I have seen the simex aren't anywhere near as good on rock.

[Jay]

Hardly any boggers or iroks here (almost none in fact).

The simex's are preferred by the people in the southern states where there is more mud and less rock, in queensland it is drier with more rock people tend to run MTR's, swampers (Q78 type pattern) and some of the comp rigs have started running BFG krawlers.

The MTR's I run do really well on rock and wet rock, and OK in mud, from what I have seen the simex aren't anywhere near as good on rock.

Ben

by MTR you mean the BFG Mud Terrain ???
How is their wall tickness compared to Simex?
What type of Swampers are people running TSL's?

Ian
I run 12-15 psi in my 32*9.5 ET's I ve had one case when my tyre hopped of the wheel when i was being snatch towed diagonally my rear recovery point being a high central NATO hitch. Other than that the ET's were really great and unstoppable on 12 psi V-dicthes crawlings

JAY

[ISUZUROVER]

Ben

by MTR you mean the BFG Mud Terrain ???
How is their wall tickness compared to Simex?
What type of Swampers are people running TSL's?

No the Goodyear MTR - much better than the BFG MT. I don't know how the wall thickness compares to simex bt the sidewalls on the MTR's are pretty good. I have run mine at 8psi on very sharp rocks many times and had no problems.

Yes TSL's

[Slunnie]

The JT2's in my opinion have it over the MTR's in all terrain except smooth rock. Smooth rock will stuff them, though this is where the MTR's shine. The JT2's are pretty good on sand also.

[p76rangie]

The MTR is about half way between a mud tyre and a all terrain. The MT in MTR stands for something like maximum traction rather than Mud Terrain.

[Jay]

The JT2's in my opinion have it over the MTR's in all terrain except smooth rock. Smooth rock will stuff them, though this is where the MTR's shine. The JT2's are pretty good on sand also.

Slunnie
what makes the JT'II inferior in rockcrawling?
How do you compare JT'II to ET's in overall peformance(mud,snow,rock crawling)
Ben
How does the JT'II compare to the MTR in mud and snow conditions?
What size of MTR's are you running and for how long?
How would you compare the MTR to the TRXUS in price and peformance?

[ISUZUROVER]

From what I have seen I would disagree with slunnie, I think it is the other way around, the MTR's have it over the simex's in everything but mud and soft ground.

MTR are as agressive as a mud terrain but are not optimised for mud. MTR stands for Maximum Traction Reinforced. They have a silicone rubber compound which gived them really good grip, especially on wet rocks.

I ran my MTR's for at least 1.5 years (my 4x4's are half way round the world at the moment so I can't drive them). They are 285/75/26 (33"). No Snow near Brisbane so I cannot tell you about that. For me the MTR's worked well in the clay-type mud I drove in, but a tyre like the JT/ET or MT117 is better in those conditions. The TRXUS doesn't really sell here either so wouldn't know.

[red90]

How would you compare the MTR to the TRXUS in price and peformance?

IME, performance differences between these two are too close to call.

Price depends on location. In North America, the TrXus are 2/3rds the cost of MT/Rs. In Australia, it is the other way around.

[Slunnie]

The JT2's in my opinion have it over the MTR's in all terrain except smooth rock. Smooth rock will stuff them, though this is where the MTR's shine. The JT2's are pretty good on sand also.

Slunnie
what makes the JT'II inferior in rockcrawling?
How do you compare JT'II to ET's in overall peformance(mud,snow,rock crawling)
Ben
How does the JT'II compare to the MTR in mud and snow conditions?
What size of MTR's are you running and for how long?
How would you compare the MTR to the TRXUS in price and peformance?

I have my theories, but the JT2's are a relatively hard carbon rubber and the tread design gives a relatively small contact area. The centre tread on the 10.5" ones I run is a single row, whereas shortly I hope to move to the 11.5" width to gain the 2nd centre row and hopefully gain some more smooth rock traction. The MTR's on the other hand are constructed of a silica compound which is very soft and so high traction for smooth rock is gained. With a softer carcass I suppose the MTR's can be more effectively aired down than the JT2's also for a greater contact patch. I spoke to Dynamic 4x4 who I think were the designers or importers or something, and unfortunately Silica rubber isn't currently compatible with bias ply construction.

In terms of overall performance, if the Jungle Trekkers have anything that they can physically grab then they will usually drive it. So for rough rock, mud, clay, sand, (never driven on snow) etc then the JT2's are weapon tyres. Smooth rock - MTR with grip traction is a winner.

As a comparison the JT's to MTR in mud. I've been in situations where the MTR's would sit at the bottom of mud hills spinning uselessly, and the JT2's have walked the hill with no wheelspin. Then an ET shod 4WD has towed the MTR shod 4WD's up the hill!

I've been running JT2's for about 1 year, and MTR's which are generally my road tyres for a few months.

Edit: Sorry. Comparing the JT2's to ET's. I find the ET's a little better on smooth rock, though the ET's wonder significantly more on the bituman driving to and from play time, The ET's dig less than the JT2. Apart from that the offroad performance is very very similar. The JT2's and ET's are different sizes.

[Maggot4x4]

I Have 37" MTR's, 38" TSL's, 33 & 35" BFG Mud's and a mate I go driving with runs 36" JT II's and another mate runs 39.5" Boggers.

MTR's are a good allrounder if you only want 1 set of tyres and you drive on the road. Very good on rocks, pretty good on the road, very average in the mud in NSW (Clay) and good on sand.

The TSL's are a great tyre on the front of a truck, but need to be at very low pressures to work properly on rocks, they work best with a bit of siping on the centre lugs to aid traction.

BFG's were the only tyre to have for a long time and still an excellent tyre, better in mud than an MTR, a bit noiser than an MTR on road, not quite as good on rocks as an MTR but have always been good to me and I had 115000km out of a set of 35's.

I have to say the the JT 2's suprised me, I was expecting them to me a mud only tyre but having seen how they go on sandstone, I think the will be my next tyres. Like the TSL's you need to air them way down to work properly ban are very loud on the road but they have won many comps over here and are the tyre of choice but the winch challenge competitors.

Boggers are just the best tyre for mud & rocks, simple as that. Forget about driving on the road with them. I believe they work best in combination with TSL's front and Boggers rear. You can also cut the boggers in a way to give better cross slope traction which is there biggest downside.

Hope this helps.

[Slunnie]

Do you mean the 36" ET2's instead of JT2's? A mate runs the 35x11.5" ET2's and these are a step forward on rock.

[DiscoDino]

IROKs are the best "all round"....nothing will beat an ET in <1 foot of mud...Been on TSLs, ETs, and now IROKs...these are the BEST...will give my opinion versus the Boggers when the 38.5s arrive in Lebanon.

[Maggot4x4]

Do you mean the 36" ET2's instead of JT2's? A mate runs the 35x11.5" ET2's and these are a step forward on rock.

I do, sorry.

[Aquarangie]

I run 235/85R16 MT/R's on my Vogue alloys. I only run the one set of tyre and I am more than happy with them. The only thing though I have to buy a new one after the sidewall had been cut a bit too deep on a recent club trip and you can now see the chord inside the cut (told it's a write off now). I don't know of anyone else who has had this problem with there MT/R's, but it's just one of those things that no radial tyre is not immune to.

The width is a bit skinny for many people, but they drive well on Aquarangie and on the new beast. I would probably go a bit wider next time (265/75) in all honesty for better on-road feel.

Regards,

Trav

[110 TUFF]

Im running the 33 x 10.5 JT 2"s on my 110 ( 34 inches overall ) and cant fault them at all. have prevously had BFG MT's and my mate is running 33 inch MTRs on his patrol. IMO, they cant compare to the JT's. i find them awsome in mud and sand, shale and rock. not very often have i found very smooth rocks in my travels ( too smooth to get grip on with the JT's ) run at the right pressusres and with the right approach and technique they seem to get grip on nearly anything.

The JT's are subsantial stronger due to there much thicker sidwall then the MTR's, however they still bag and mould themselves extremly well due to the bias ply construction compared to the radial MTR. the bias construction make punctures more difficult as the cris-crossing ply makes penertration harder.

I think the Jts out perform the Mtrs due to the fact that they are a more all round tyre. my mates MTR's become roler skates at the first sign of a mud hole or if the tracks were on have had prevous rain and then when he finds rocks grip is a lot harder to gain.

Drew.

[scotto]

Currently ran 32 ET's found them unbeatable in mud however sucks in virgin snow and rock crawling.

How would you guys rate the JT II's 34*11.5 in mud,snow and rockcrawling? Does the tyre give a wider stance and flotation?
How would you compare the JT'II to Boggers and IROKS?

Thanks
JAY

real interesting thread people i am interested in the JT2s.

i am also interested how much it snows in lebanon Jay?

[DiscoDino]

scotto...

it snows extensively in lebanon anywhere higher than 900m in the winter months...

at least 50% of the trials become impassable to anything other than the floatation-tired rigs, and the other 50% become violently muddy/slippery...

Not sure whether I can post some pictures here or not, but you can check out some pictures of the "mild" snow at:

www.discoweb.org/nadim

Unfortunately, the last run I did on the IROKs was not documented, but I am planning something wild around Xmas time!

[will_warne]

Scotto, I've run both 35" ETs and 33" JTs. Both are a step ahead of everything bar boggers in mud. As far as the performance of 32" ETs compared to 34" JTs, I think you'll find performance in mud about the same (the tread's less efficient on the JT but because its a larger tyre its more open). You'll also gain a good extra bit of diff clearance, which is a big bonus. The only real downside with JTs is they don't have such good lateral grip, you really need to air them down or you'll slide all over the place.

On road, I'd actually say the JTs better in the wet although they're a little noisier. As for snow, The JTs are great whereas the ETs aren't quite so good. Rock really isn't my thing but from the little I've done both tyres seem pretty good when you air them down.