Let's consider these distances
http://gc.kls2.com/cgi-bin/gc?PATH=o...YLE=&ETOPS=180
and this payload range
http://www.boeing.com/assocproducts/...s/777rsec3.pdf
The needed take-off weight is less than 625,000 lbs (283,000 kgs).
Percentage per Main gear 46
So each Main Gear is taking 130 T
6 wheels per Boggie and the wheel loading is 21.7 T
What's the problem ?