[WillStanton]

Thinking about running some 20.8 R42's on as outer duals on a JD 7920 with 480/80R50 inners?

Would be group 48's on inner and 47's on outer so a 4 inch difference in OD.

Cheers
Will

 

[smythricky]

What do you expect to achieve by doing this. If you are sinking in far enough for the duals to be doing anything it would be too wet to be there.

Richard

 

[joeltractor]

I would be thinking the same, what will it mainly be doing ?

 

[WillStanton]

I would have thought that if we get the pressures just right the two inch difference would be negligible. I will be spraying and spreading. Reason is I have a set of these 20.8's spare.

Not sure what you mean by too wet to be there. If we waited for dry conditions we'd only be in the paddock three months a year.

 

[WillStanton]

I have got a set of 710R42's that would be the same RCI. Maybe they'd be a better option?

 

[joeltractor]

If you have to get the centers of spacers made and cant just 'slip on' the 20.8 to try i would be spending the money on getting centers made for the 710 , that is just my thoughs anyway

 

[joeltractor]

Anyones elses thoughts ?

 

[offroadnt]

If you spend anytime on the road I think the smaller tires will scuff real bad. The radius is the same if the smaller tire touches the road but they still seem to wear bad.

 

[smythricky]

I'd put the 710 on.