![](http://4.bp.blogspot.com/-xM3CdwhR-qs/UIR1UcS9LeI/AAAAAAAAAH8/c1k7ZgrUC_Y/s200/tired_big_wheel.jpg)
Before it was too late, I designed and printed a drop in replacement. It is really working well, without any wear though I really made its life hard sometimes.
You may like also the small gear replacement.
Same wheel properties of course, but proved to be more solid in PLA