I visited Prado point, from memory I believed it to be the higher rating, on Prado point it mentioned after market rated at 1120Kg, looking at speedy wheels they showed
1400Kg for off road wheels, I would imagine genuine Toyota alloy would be rated similar, but I'll see if I can find out more.
Car label, so they have to be rated at least at this:
(Alloy rim)
Rim size 17x6 1/2 JJ is for a 265/65x17 tyre with a load index of 112 & "S" Speed rating (Max load not less than 1120kg)