Dunlop run flats

[Richard Farrant]

Originally posted by Dan Sicotte
Here's the Michelin X. They are all the same size/ wear. I would like to know what transmission wind up is? I realize the bevel box situation, but the distance I was going, wouldn't hurt them.
What's the deal with the bead angles 0 and 5 degrees?

Dan,

I don't know whether you are aware of how the transmission works, but to put it simply, both wheels on one side are geared together, the differential is in the transfer box and works side to side. If you have tyres differing even only slightly between front and rear on one side, they will fight. Even with identical tyres, when you start to turn the vehicle, one wheel is trying to travel further than the other, this is made worse if tyres are mismatched. This puts extreme load on bevel boxes and hub planet carriers.

I recently had a Dingo in the workshop (same type of trans.) and had to put an odd wheel on temporarily. I pushed it no more than a couple of feet and it stopped, jacked a wheel and it spun, let it down and I could push it a little further........wind up.

As I am not sure of the rim angle on those Michelin tyres, so cannot comment. Have you checked out if the tyre will accept the load. I suspect these are made for Land Rover and similar lighter vehicles.

Richard