help, need Perentie rim/tyre combo for sand

[airforceone]

Hi, I have recently purchased a GS Perentie and use it to tow a 5m tin boat from the shack on to the beach for launching. Everyone uses tractors but I figured my Land Rover with the tyres deflated would do the job which it has up until this recent week when all the holiday traffic has turned the sand into powder. On Saturday I got bogged and was rescued by a tractor (my worst nighmare....) To prevent this from happening again I want to get try the widest possible rim/tyre combination and run at the lowest possible pressure as I believe I should be able to drive over this powder. Distance is less than 1km so I am not worried about something that is legal it just has to work. Balloon tyres sound great but not sure where to get them or what will fit. Happy to throw a few dollars at the problem if I have a good chance of success. Do not be shy with comment/suggestions???

[isuzutoo-eh]

9.00x16 tyres on a 7" rim would be an improvement! Though you want something with a lower sidewall rating than a truck tyre would typically have.
Look towards agricultural tyres perhaps.

[isuzurover]

I run 285/75x16s on 7" wide disco 1 steel rims. Running them on 7 psi I haven't yet been in a situation I couldn't drive out of. I have recovered a few people too.

I once got bogged retrieving my 5m plate dory on a fairly steep beach, but just unhooked, drove out and snatched the boat and trailer up onto the flat with a strap.

You can always go bigger, but you will need a suspension lift first.

[BadCo.]

I run 285/75x16s on 7" wide disco 1 steel rims.

Is this with standard offset and no lift?

[gusthedog]

In my experience, wider tyres are not better on sand than narrow tyres. Wide tyres have greater resistance and will be harder for the vehicle to push. Narrow tyres have a nice long footprint in sand. What ply rating are your tyres? If the side walls dont flex when you deflate (like with 12 plytruck tyres for example) you'll get bogged every time.

[isuzurover]

Is this with standard offset and no lift?

No lift. The rims have an extra 30 mm offset over std. Std rims would fit but rub on the rear coil turrets on articulation.

[BadCo.]

In my experience, wider tyres are not better on sand than narrow tyres. Wide tyres have greater resistance and will be harder for the vehicle to push. Narrow tyres have a nice long footprint in sand. What ply rating are your tyres? If the side walls dont flex when you deflate (like with 12 plytruck tyres for example) you'll get bogged every time.

Any wider tire is better then the Olympic Steel Treks. The Steel Treks do an excellent job of cutting into the sand even at low PSI.

[gusthedog]

Any wider tire is better then the Olympic Steel Treks. The Steel Treks do an excellent job of cutting into the sand even at low PSI.

Well that's the issue then. The tyre size is spot on. The tyres are not. ;)

Olympic steel treks have too stiff a sidewall. It is not that they are the wrong size.

[isuzurover]

In my experience, wider tyres are not better on sand than narrow tyres. Wide tyres have greater resistance and will be harder for the vehicle to push. Narrow tyres have a nice long footprint in sand. What ply rating are your tyres? If the side walls dont flex when you deflate (like with 12 plytruck tyres for example) you'll get bogged every time.

Not this argument again...

This myth is caused by people swapping their 16s for 15's that are wider but smaller in diameter.

The best option is a tyre that gives you both a long footprint (large diameter) but also maximises total area in contact with the ground to reduce ground pressure in soft sand.

Drive on some WA beaches with 7.50s and you will sink straight to the axles whatever pressure you are running. Yet the same vehicle on 35x13.5s will float right over the top.

[BadCo.]

Well that's the issue then. The tyre size is spot on. The tyres are not. ;)

Olympic steel treks have too stiff a sidewall. It is not that they are the wrong size.

Disagree.

190mm wide tires are biscuits. Even going to 235/85 is a huge improvement.

Anyway he is after suggestions for better tires on sand, and I offered a affordable solution. What is your solution?

Also, for the OP, apparently the biggest tire you can fit on standard rims with no lift on a Perentie is 255/85. Which gives you more width and taller tire so a lot more contact area=win.

[gusthedog]

Whatis your affordable solution?

The cheapest option would be to put some maxxix 751s in 235/85 at $200 a tyre. Yes they are wider than 7.5 16s but not by much. Much cheaper than changing wheels and tyres.

And think what you like. My experience is just different to yours. Doesn't make it wrong.

And isuzurover, my argument has nothing to do with swapping from 16s to 15s. I find narrow tyres fine in sand. But they need a flexible side wall.

[isuzutoo-eh]

Disagree.

190mm wide tires are biscuits. Even going to 235/85 is a huge improvement.

Anyway he is after suggestions for better tires on sand, and I offered a affordable solution. What is your solution?

Also, for the OP, apparently the biggest tire you can fit on standard rims with no lift on a Perentie is 255/85. Which gives you more width and taller tire so a lot more contact area=win.

Need to go to a 6.5" wide rim for 255/85/16s legally from what I have read on tyre manufacturer's websites (Maxxis are different, they want a 7" rim). The 6" Perentie rim isn't all that useful.

[BadCo.]

Need to go to a 6.5" wide rim for 255/85/16s legally from what I have read on tyre manufacturer's websites (Maxxis are different, they want a 7" rim). The 6" Perentie rim isn't all that useful.

In that case you could ANR4583 rims or disco rims.

Or we just wait for isuzurover to chime in with his experiences of 255/85 on 6" rims...

[isuzurover]

...

Or we just wait for isuzurover to chime in with his experiences of 255/85 on 6" rims...

??? I have only ever run 255s on 7" disco rims.

[BadCo.]

??? I have only ever run 255s on 7" disco rims.

My apologies, bad memory.

You said the 255 would be better on a smaller then 7" rim

http://www.aulro.com/afvb/2193227-post14.html

[isuzurover]

My apologies, bad memory.

You said the 255 would be better on a smaller then 7" rim

http://www.aulro.com/afvb/2193227-post14.html

Yes, but that is more so the rim doesn't get damaged offroad, and the tyre stays on the rim at low pressure without beadlocks. I have never had a problem keeping my 255s on 7" rims at low pressure, however my preference is to run the minimum rim width specified for the tyre (or even slightly below in the case of my 285s).

e.g. 235s fit fine on 5.5" landie rims.

p.s. - IME Land Rover alloys are hopeless at holding tyres on at low pressure. Don't be tempted to fit them.

[BadCo.]

So do you reckon he could get away with a 255 on the 6" Perentie rims?

[isuzurover]

So do you reckon he could get away with a 255 on the 6" Perentie rims?

Minimum rim width is 6.5". So yes, you could probably get away with 6", but no narrower.

[BadCo.]

Ok so probably some 255/85R16 All Terrains would be the go then?

[isuzutoo-eh]

Ok so probably some 255/85R16 All Terrains would be the go then?

Some second hand muddies would be even better, as long as they aren't too aged. Cheaper and similar tread!

[BadCo.]

Some second hand muddies would be even better, as long as they aren't too aged. Cheaper and similar tread!

Ooo that's a good idea! How common is 255/85R16 over there? I wouldn't have a chance of finding a set second hand in NZ.

[isuzutoo-eh]

Compared to, say, passenger car tyre sizes, 255/85/16s are uncommon, but amongst 4WDers not so uncommon that a used set couldn't be found. All it takes is a wanted ad...

[airforceone]

Thanks to everyone for your input, I have located some second hand BF Goodrich 235 85R 16 at the right price so will give this a go. If no good I will go more extreme and change rims as well.....cheers

[gusthedog]

Exactly what I would've done. Good job.

[BadCo.]

Good find!

[TK_Co]

Ok, so on a bit of a different tangent, has anyone fitted, or know if you can fit, 16x8 boost alloy rims to a 6x6 Perentie? Say with 285/75R16's ?
89516

Something similar to this?


Just catching the perentie bug.

1990 Perentie 6x6 Air Defence GS ARM 51867
2013 Range Rover Sport
1996 6X6 Infantry Carrier Hard Top ARN 202238

[BadCo.]

Dont they fowl on each other or something in the rear if the tires are too big? I thought I read something along those lines in the 6x6 suspension thread.

I may be wrong though...