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22 Apr 2013
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as above, go for a 7.50x16 equivalent. tyres around that size are standard fit on landcruisers, hilux and of course landrover in many markets.
You would struggle to get a 265 on a rim suitable for a 7.50x16. If you fit too wider tyre on a rim you run the risk of it coming off the rim when it's aired down.
I would suggest (on 7inch rim I think) go for a 235/85 (what I use, but BFG AT as most mileage is on tarmac but the extra ground clearance may be useful) or 235/75 or, of course, 7.50x16
you might find this useful for comparing sizes
Tire Size Calculator - Compare Tire Sizes
airing down a narrow tyre (i.e. standard) will provide better floatation than a fat tyre, which will also put more strain on bearings and suspension. A FAT tyre also fails to bite down through crud to get grip so suffers poor lateral stability and poorer grip.
There must be a reason why most off road racers, including desert racers, use BFG mud terrains!
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22 Apr 2013
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We drove a transafrica with just one space and an repair kit. Because we had 33" - the spare tyres are too heavy to carry two of them.
We killed one tyre (sidewall) and got it repaired with a tube.
We dont thought much about: any Service like TNT or DHL will sent a set of new tyres to you.
That isnt cheap i know. But how height is the probability - that you kill two tyres completely?
Surfy
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23 Apr 2013
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Hey yeah that's a thought, could always get a tire couriered down. Although not ideal, the lead time may not help. Guess if we carry two once we get a puncture that's unrepairable we could always get a tire couriered down to a destination we plan at visiting in a weeks or so's time.
One thing about having such a large tire is the difficulty removing it from the rim. Most places in Africa remove tires manually from what I understand. Rather than the pneumatic tire machines used in more developed countries.
The more common sizes like the 235 or 7.50 may be the go although I would like to run a 265 in case of more muddy terrain, or during early spring while we are crossing the Himalayas, where there will still be a fair bit of snow/mud.
Main reason I want to get this right is because even thought you mentioned you only managed to kill one tire on your trip. We killed 3 in 15 000km across oz.
I'm thinking even a 265 75 16 may be hard to find in the less developed country. So the standard tire that's on there now the 235 85 16 may be more viable.
Dam still undecided. Narrowed it down to two options at least.
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23 Apr 2013
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I should add that I bought the troopy with out the split rims. It's fitted with 16x7 sunraysias.
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24 Apr 2013
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Quote:
Originally Posted by Handy man
The more common sizes like the 235 or 7.50 may be the go although I would like to run a 265 in case of more muddy terrain, or during early spring while we are crossing the Himalayas, where there will still be a fair bit of snow/mud.
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As per my reply above, unless your on a bottomless bog or a glacier in Iceland a skinny tyre will give you more grip. personally, on a muddy/icy road in the Himalayas, I would want to know my tyre isn't going to slip sideways under me, and that means going skinny.
If there is any kind of surface underneath you need skinny to bite down to it and give you the grip. If there isn't then just air them down.
We carried about 3/4 ton of schoolbooks plus out own gear, tools and spares through the Sahara, and airing down the tyres got us out pretty much everytime we got into the soft stuff, but sometimes we were down do 10PSI to do that (that wasn't what caused the punctures before you ask! That was sharp rocks in Morocco)
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24 Apr 2013
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Quote:
Originally Posted by Handy man
One thing about having such a large tire is the difficulty removing it from the rim. Most places in Africa remove tires manually from what I understand. Rather than the pneumatic tire machines used in more developed countries.
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The workshop in Switzerland where i store my 33" tires, can not raise them 
In Africa they did it manually, without a problem. Ok, they don't care about the aluminum rim, but who care some scretches?
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Main reason I want to get this right is because even thought you mentioned you only managed to kill one tire on your trip. We killed 3 in 15 000km across oz.
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Usually is a sidewall crack a kill of a tire. In europe not allowed, but usual in africa. Fixed with a tube and some vulcanizing stuff - ok for offroad and dirttracks, maybe not ok on the german highway with 200km/h.
I love to drive offroad and also to push on dirt tracks (also with near 4to weight), our avaerage speed was 64 km/h 
Just look for the right tyre pressure and lower the speed on sharp rock underground.
To be honest, when you want to get more than 30`000km out of your tires, you should slow down a bit more than...
Maybe we would have more killed tyres with more weight (added through an additional rim&tyre (near 50kg)?
Surfy
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24 Apr 2013
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Quote:
Originally Posted by Surfy
I love to drive offroad and also to push on dirt tracks (also with near 4to weight), our avaerage speed was 64 km/h
Surfy |
http://www.horizonsunlimited.com/hub.../what-if-68655
post 8
Congratulations on using someone elses country as your personal rally stage
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25 Apr 2013
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Quote:
Originally Posted by moggy 1968
(...)
Congratulations on using someone elses country as your personal rally stage
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Hint: You can link a special Posting number, when you link to the #Number tag (on the right side).
Maybe you missunderstand me. I did not drive at speed, i dont had time for repairs. I just drove relaxed, at an optimal speed for the given underground (washboard) and so on.
We 4x4 Overlanders have spent much money for they car and equipment, never ever one of us will harm his baby with over-speeding in the bush during extended trips 
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25 Apr 2013
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265/75r16 is fairly well available, as everything its variable !
One thing I would say tho , is that you should train yourselves, and have the tools to remove and replace tyres yourself, decent strength tyres will be relatively easy to remove, its the big baggy soft sidewall ones that are the trouble, and you should not be using these anyhow. The harder part is reseating the bead on a tubeless tyre that is narrow on a wider rim . There are techniques to address this as well. Being able to change tyres on rims allows you to carry extra spare tyre without having to carry the weight of a second spare rim . The optimum is start tubeless , with plug kit , this will allow easiest repair (less hard work in hot/cold conditions) , and can often be done without even removing wheel, or even jacking vehicle. You can then get to point of fitting tube, and from there even sleeve and tube if very damaged. Its a balancing act between weight and redundancy and probabilities . Multiple punctures can occur , conversely its not unusual to drive halfway round the world without one (done it  )
HTSH
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26 Apr 2013
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The statement
I love to drive offroad and also to push on dirt tracks (also with near 4to weight), our avaerage speed was 64 km/h
would suggest otherwise,
as would an average speed of 64kmh. According to my dash display that's what I have averaged driving around the UK over the last 6 months or so, mostly on main roads and motorways, and I don't hang about.
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25 Apr 2013
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Quote:
Originally Posted by moggy 1968
Congratulations on using someone elses country as your personal rally stage
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Hello Moggy,
That's a bit Hyacinth Bucket style of comment! I suppose I also deserve to be castigated for driving, on several occasions, the distance of ca 400 km between Ajdabya and El Adem near Tubruq in about four hours. But I swear I did slow down on km 230 (the only bend in the road)!
BTW, the UK has not the highest rate of violent crime in the developed world. But it has a high number of responsible drivers, like us.
__________________
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Roman (UK)
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27 Apr 2013
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Quote:
Originally Posted by Roman
Hello Moggy,
That's a bit Hyacinth Bucket style of comment! I suppose I also deserve to be castigated for driving, on several occasions, the distance of ca 400 km between Ajdabya and El Adem near Tubruq in about four hours. But I swear I did slow down on km 230 (the only bend in the road)!
BTW, the UK has not the highest rate of violent crime in the developed world. But it has a high number of responsible drivers, like us.
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Analysis from the EU commission, and others, shows the UK to have the highest violent crime rate in Europe per 100000 population, and also higher than the US or Australia, although perhaps surprisingly Australia has the highest rape rate and Sweden 2nd, actually, Sweden features well up the list of a number of crimes rather surprisingly. Whilst there are difficulties comparing different countries crime rates due to differences in reporting (for example, the UK has a very high rate of knife crime, but the UK is unusual in that even just carrying a knife is a crime) many different studies have the UK at or towards the top of the developed world table. Conversely, the UK has one of the lowest rates of incarceration.
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24 Apr 2013
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Quote:
Originally Posted by Surfy
We drove a transafrica with just one space and an repair kit. Because we had 33" - the spare tyres are too heavy to carry two of them.
We killed one tyre (sidewall) and got it repaired with a tube.
We dont thought much about: any Service like TNT or DHL will sent a set of new tyres to you.
That isnt cheap i know. But how height is the probability - that you kill two tyres completely?
Surfy
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pretty high, I killed three going to Gambia and back and 2 going to Russia, one puncture, one punctured by some local with a knife!
personally I would advise against taking such non standard wheels and tyres, they will put additional stress on your vehicle and be difficult to replace, and DHL don't deliver to the middle of the Sahara!!
Of course a lot depends on your route and how much off roading you intend doing, although my Russia trip was all tarmac.
OK, you got away with it. You can get away with playing Russian roullete once as well, but I wouldn't recommend making a habit of it!
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