Thinking out load

[fsmyth]

I personally think you are making much too big a deal out of it.
As much as I have overloaded singles AND duals, I have never had a
bearing problem in anything that had a modicum of maintenance.
Don't know if I would recommend anyone else doing some of the stuff
I have done, but in this particular instance, I would do it in a heartbeat.
One reason; extra rubber on the ground.
Another: safety of having the other tire hold you up after losing a tire.
Another: less sidewall give (translates into less sway).

Properly lubed, bearings are tough animals.

 

[jaluhn83]

Quite possibly. Undoubtedly it's been done before without any issue, and I'm not saying it's a bad idea, just something to be noted. My main point is that using an add on extra tire to make a SRW into a DRW is something rather different than having a true DRW rear end, and this could have significant effects.

I also personally am less sure that it will give much benefit in stability, though yes you do reduce the individual tire load and potential for issues blowing a rear tire.