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  #289  
Old 12-19-2015, 10:07 PM
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Re: 20" Tyre Thread

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Originally Posted by Tillsy View Post
Stock 265/50R20 - would love to go a taller sidewall for added protection, but I feel going wider and taller would instead achieve the opposite when you are then bulging the sidewall at full pressure and then flexing it further with reduced pressure offload. If I feel the need to address that in future I'll swap the wheels to 18".

Why would you air them up to full pressure?
I've up-sized tires on just about every car I've owned and never had an issue.
I'm running 285/50/20 Blizzaks right now and there is definitely more stability from the wider contact patch and added rim protection.

I guess you've never seen some of the monster tires the JK guys throw on and take offroad with no issues.

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  #290  
Old 12-20-2015, 07:31 AM
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20" Tyre Thread

Nice Tillsy. I'm looking to go the same. What did you pay?
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  #291  
Old 12-20-2015, 09:23 AM
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Re: 20" Tyre Thread

Got a 14 Limited. Ran Zeon LTZ and Mastercraft courser AXT in my 12 when I had it. Getting RRO level kit, but can't decide on a tire.
Goodyear Duratrac 275-55-29
Cooper Discoverer at/w
Nitro Grappler G2


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  #292  
Old 12-20-2015, 10:09 PM
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Re: 20" Tyre Thread

Quote:
Originally Posted by MOFSTEEL View Post
Why would you air them up to full pressure?
I've up-sized tires on just about every car I've owned and never had an issue.
I'm running 285/50/20 Blizzaks right now and there is definitely more stability from the wider contact patch and added rim protection.

I guess you've never seen some of the monster tires the JK guys throw on and take offroad with no issues.
Those monsters on the JK's are all show no go. Wide tyres are great for street but not so good off-road. A wider tyre is much harder to push through sand. The skinny tyres on the old land rovers and T-model fords ate through sand and mud. The most vulnerable part of an off-road tyre in the side-wall. OK, on the street, you are after looks so you don't want your pretty rims scratched. Off-road, scratched rims don't matter but if you get the side-walls ripped out and you have run out of spares, you are cactus. It can't be fixed, neither in the bush nor in the shop.
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  #293  
Old 12-21-2015, 02:43 AM
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Re: 20" Tyre Thread

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Originally Posted by Tillsy View Post
My wife completely tore the side of a tyre open when she took out a gutter, and with the tyres only having six more months of life at most I was left no choice but to replace the lot.

Went with the Nitto Grappler G2, stoked with the performance (and lack of noise) on the road so far... yet to take them offload.
When you said the wife tore out the side-walls, I was about to chip in and say you should have got LT tyres. I checked and most of the Nitto Grappler G2 are indeed LT's. However, I checked again and your specific tyres size which I think are 265/50R20 are not LT's but XL (extra load). XL tyres are essentially passenger tyres with a capacity for higher pressures and therefore higher loads. This explains why you got such good passenger tyre type performance but it also means side-walls that are softer and bulgier than on LT's. Not a problem if like most of us you stay on the black top or the beach, just be careful on rocky tracks.
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  #294  
Old 12-21-2015, 08:05 AM
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Re: 20" Tyre Thread

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Originally Posted by BobT View Post
Those monsters on the JK's are all show no go. Wide tyres are great for street but not so good off-road. A wider tyre is much harder to push through sand. The skinny tyres on the old land rovers ate through sand and mud. The most vulnerable part of an off-road tyre in the side-wall. OK, on the street, you are after looks so you don't want your pretty rims scratched. Off-road, scratched rims don't matter but if you get the side-walls ripped out and you have run out of spares, you are cactus. It can't be fixed, neither in the bush nor in the shop.
So you're saying if the JK's ran less than a 31" tire like the WK2 they'd see better performance offroad?

Where in the post that I responding to does it even say sand? If you're driving through it every now and then an aired down tire will do just fine.

Damaged rims do matter offroad because if you have a bent wheel then you have a damaged seal.
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  #295  
Old 12-21-2015, 08:25 PM
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Re: 20" Tyre Thread

Quote:
Originally Posted by MOFSTEEL View Post
So you're saying if the JK's ran less than a 31" tire like the WK2 they'd see better performance offroad?

Where in the post that I responding to does it even say sand? If you're driving through it every now and then an aired down tire will do just fine.

Damaged rims do matter offroad because if you have a bent wheel then you have a damaged seal.
I'm sorry, we may be at cross purposes here. By monster tyres you were referring to diameter whereas I was thinking more in terms of width. And yes, you didn't mention sand. It's just that in our part of the world, off-roading often involves some sand driving which has it's own skill set. Certainly airing down is the way to go. We usually go down to around 18psi or less if it's really soft. Regarding the rims, you are a bit more extreme than I intended. Most of the rims, maybe all, on my jeep have rock gouges but it doesn't bother me. It's the tyres that I'm concerned about. I once had a car with steel wheels, got it airborne over a cattle grid, bent every wheel but the beads didn't lift and I got home OK but if a couple of side-walls had blown I would have been stuffed out in the middle of nowhere.
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  #296  
Old 12-21-2015, 08:44 PM
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Re: 20" Tyre Thread

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Originally Posted by MMAG4X4 View Post
Anyone fitted the Nexen Roadian HP 265/50R20? After 25K the Kumho's are shot on the rear. Looking for options..
Hi. First post here...I saw noone answered this. I ran the nexens on my TBSS, definitely more of a street tire, were a little too noisy...but gripped very well in dry and wet terrain....sucked in the snow.
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  #297  
Old 12-22-2015, 06:40 AM
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Re: 20" Tyre Thread

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Originally Posted by bigshogun View Post
Hi. First post here...I saw noone answered this. I ran the nexens on my TBSS, definitely more of a street tire, were a little too noisy...but gripped very well in dry and wet terrain....sucked in the snow.
Im running 295/45r20 nexen roadian and i love them. Nice and quiet and grippy on all surfaces
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  #298  
Old 01-03-2016, 08:05 PM
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Re: 20" Tyre Thread

I'm almost ready to go with the terra grappler g2 in 265/50/20. Love the look and all the positive comments. A couple of lingering issues though:

- almost all off road driving I do is on the sand (Fraser, Moreton, etc), so wondering if the tread pattern of the g2 is overkill. Would a HT actually perform better? I've always worried that the khumos are too fragile, and too easy to puncture on certain tracks, particularly around Kingfisher bay or Wathumba.

- I'm very, very, tempted to upsize to the 285/50/20, but do not want to swap the stock spare. If I did get a flat on the island could I still use the stock spare given the diameter difference? My thinking is that even if it is on the rear the ELSD should be able to handle the difference as its not actually locked in most instances, but my confidence in this assumption is low...

Any comments appreciated.
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  #299  
Old 01-03-2016, 08:32 PM
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Re: 20" Tyre Thread

My standing recommendation for 20 inch light off road is 275/55/R 20 which is, +4% OD 810mm. For your spare can use a 255/70/R18: 814mm, like the
Bridgestone D840 H/T.

Extra sidewall will help you get a longer foot print on the sand.

4 mm difference in theory but the All terrains will have bigger tread pattern to reduce it.
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  #300  
Old 01-03-2016, 11:19 PM
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For those brainiacs out there.

How much torque as a percentage would you lose based on the jeep oem specs swapping from a 265 50 20 to a 285 50 20??
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