Heavy trailer tires

[Dan]

Hi all im currently looking to replace my work trailer and need to carry 3500kg my queries are why don't trailer manufacturers offer duel tyres or single truck tires with the higher load rating over tandem, is there a engineering reason just curious really

[dales133]

Duel wheels would make it too wide or take up to much cargo space.
A good set of steel wheels off a land crusier or commercial van will do what you need

[Mik01]

Hi all im currently looking to replace my work trailer and need to carry 3500kg my queries are why don't trailer manufacturers offer duel tyres or single truck tires with the higher load rating over tandem, is there a engineering reason just curious really

Probably because of axle rating. I'm not sure you can have a single axle on a trailer that can support that weight. Plus you would have to make sure the load was directly even over the axle, otherwise that would be a lot of weight on your tow ball, or pulling up off your towball!
You need 13 or 14 inch light truck tyres and rims for this application. By law, the bigger tyre you go, the lower load rating you can carry. I looked into it when fixing the dodgy tandem trailer I bought recently (in Qld, but I assume it's a common standard).
What's wrong with tandem anyway?

[Chris J]

The problem is load rating on single rims this includes wheel stud sizes; you could replace your axle assembly with a higher rated one then use truck type like OKA steel rims, Mitsubishi Canter or Isuzu truck rims. The standard Nissan / Toyota 6 x 139.7 PCD just won’t cut it.

regards, Chris

[Dan]

Mik01
The problem with a tandem is moving it around unloaded by hand when not in use im not sure a single wheel would be the answer anyway.
Just curious ive seen the odd truck trailer with a single axle  that carries more than  3500 just not for cars

[bodgie]

Sorry to pick on this thread but it's something that annoys me, duel and dual are different.

duel

du·el  (dl, dy-)
n.
1. A prearranged, formal combat between two persons, usually fought to settle a point of honor.
2. A struggle for domination between two contending persons, groups, or ideas.
v. du·eled or du·elled, du·el·ing or du·el·ling, du·els
v.tr.
1. To engage (another) in or as if in formal combat.
2. To oppose actively and forcefully.
v.intr.
To engage in or as if in formal combat.

dual

du·al  (dl, dy-)
adj.
1. Composed of two usually like or complementary parts; double: dual controls for pilot and copilot; a car with dual exhaust pipes.
2. Having a double character or purpose: a belief in the dual nature of reality.
3. Grammar Of, relating to, or being a number category that indicates two persons or things, as in Greek, Sanskrit, and Old English.
n. Grammar
1. The dual number.
2. An inflected form of a noun, adjective, pronoun, or verb used with two items or people.

[Dan]

Bodgie
 thankyou for correcting my mistake and adding an invaluable addition to this thred do you have anything to add about the actual question i posted? maybe you could cut and paste something about single axle trailers for me and why they don't use duel tyres

[#jonesy]

It would require higher rated tyres, Rim's, axle and suspension.  It would put a lot of strain on the 4 mount points of the leaf springs.  Chassis at that point would also be heavier.  It would be much easier to use 2 x 2 tonne axles. 2 axles would also better support the weight if lodged unevenly being less critical on the ball weight