Source and cost to convert dual-tires to singels on a MB lorry

Sitec

Adventurer
#16
Decision made for me!

Well, I'd 99% decided that changing from 20" to 22.5"s is the way I'd go. That's now decided! Gumtree came up with the goods. 10 22.5" Alcoa Alloys for little more than steels! They can sit until I'm ready to fit new rubber but, should set it of nicely! image.jpg
 
#18
Thx - If I end up with a 1222 instead of a 1019 I will weight it down to 10 ton anyway, I wont need the extra payload of the 12XX. Everybody wants the 1222 so the prices are fairly higher, and a 35 years old girl will be cheaper on roadtax, only 25%.
 
#19
So any insights on whether to go for 20" or 22.5" wheels when converting to super-singles on a MB 1017AF, 1019AF or 1222AF. Performance, cost and availability?

Thx
 
#20
The only singles that you are likely to find on the shelf at truck tyre places in Europe are 385/65 on 22.5 inch wheels, as these are commonly used on the steer axle of heavy trucks. I suspect that the same is true in the US, although I saw lots cement trucks with huge 22.5 tires (425 or 445 wide). I don't know if the load capacity of the 385s is enough for the back axle of your truck, you'd need to check.

20 inch wheels are not a common size anymore outside of military and specialist trucks, and so getting tyres is likely to require ordering them in, wherever you are. They come in a better choice of off-road treads, and if you want tall rubber, there's not much bigger than the 16r20 XZLs.
 
#21
The only singles that you are likely to find on the shelf at truck tyre places in Europe are 385/65 on 22.5 inch wheels, as these are commonly used on the steer axle of heavy trucks. I suspect that the same is true in the US, although I saw lots cement trucks with huge 22.5 tires (425 or 445 wide). I don't know if the load capacity of the 385s is enough for the back axle of your truck, you'd need to check.

20 inch wheels are not a common size anymore outside of military and specialist trucks, and so getting tyres is likely to require ordering them in, wherever you are. They come in a better choice of off-road treads, and if you want tall rubber, there's not much bigger than the 16r20 XZLs.
Thanks - I just noticed that Excap uses 20" rims on their upgraded Steyrs (http://www.excap.de/upgrades/reifen-r20).
But I can see that 22,5" tires seems to be available in different makes and sizes with in EU, and the 425/65 looks like a nice solution.

For the above mentioned trucks I have read that an ET 120 would be correct for a 13x22.5" rim (http://www.nomadic-one.com/reflect/off-road-truck-tires-and-rims), - I guess this is only for the front wheels, or?
 
#22
I agree with Nick

My research led me to believe that the 22,5 inch rim was the weapon of choice.

I have read several blogs were people have been stranded for weeks trying source 20 inch rims.

We have Bridgestone 748's 385 65 x22.5 on our 1017A max payload 4250 kg.

So far i sm very pleased with them. 23000km on roads and 2mm of wear ( I compare them to the unused spares )

They are also very quiet but have the wrong tread pattern fof serious offroad.

Neil
 

Sitec

Adventurer
#24
Well, heres what I ended up going with.. I found these on Gumtree! 315/80 R22.5 Goodyear Omnitrac's... x8, complete with late Mercedes steel rims. image.jpg
 

Sitec

Adventurer
#25
And this is what they look like when fitted. They've lifted the top speed a little, and suit the truck well. I have 6 on the truck, and 2 spares ready to bolt on the back of the body when I build it! image.jpg
 
#26
Peter

Sorry not sure what ET Stands for.

I have the same rims front and rear and this is the number stamped on them if it helps

2228 22.5x11.75H 12-03 T

Neil
 
#27
I have 315/80 22,5 's on our truck. Great road tire but stay clear of the soft stuff they are not wide enough. After all the wear issues friends with 20" rims and tires 22.5's are the way to go, but I would go with a minimum 385, preferably 415. These widths are standard dump truck tires.
 
#28
Peter

Sorry not sure what ET Stands for.

I have the same rims front and rear and this is the number stamped on them if it helps

2228 22.5x11.75H 12-03 T

Neil
Thanks Neil for your effort.

My guess is that 12-03 indicates a ET off 120 mm. 11.75 is the with of the rim in inches and T probably stands for Tubesless.




The Wheel Offset (ET) Explained:

quote:
"The offset determines how far under the arch or how far towards the outer arch a wheel will sit.

Each car has its optimum offset and a range within which the offset can be for the wheel to fit the car properly.
If the offset is too low for the range allowed, the wheel could stick out from the side of the car, if too high from what it should be the wheel may catch on the suspension or bodywork as it will be too far under the car.

This is due to the fact that if you put a wheel on your hub with a higher offset than before, the wheels bolting face will have to move further under the car to meet the hub, in extreme cases causing the wheel to sit too far under.If you take a wheel and cut it in half and draw a line down the centre of the width of the alloy wheel the offset will be the distance between the back face (mounting face) of the wheel and the centre line that you have just drawn.

The offset is commonly shown as the letters ET followed by a number, eg: ET49. The offset is always measured in mm and can normally be found stamped on the back of the wheel or behind the centre cap (if fitted)."
 
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#29
I have 315/80 22,5 's on our truck. Great road tire but stay clear of the soft stuff they are not wide enough. After all the wear issues friends with 20" rims and tires 22.5's are the way to go, but I would go with a minimum 385, preferably 415. These widths are standard dump truck tires.
Thx, seems like the wide 425/65-22.5 on a 13" wide rim would be the best choice then, as I eventually I will end up in the dunes in Western Sahara/Morocco.
 

DiploStrat

Expedition Leader
#30
Public Service Announcement

You may want to be careful of wheels from Stazworks. Their two piece wheels can break bolts on a heavy truck. The first time the result was a slow leak, the second time was an explosive blow out.

IMG_0618.jpg IMG_0612.jpg

Caveat emptor!
 

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