so what does the 620kg mean on my wheels?

[TheSparo]

im curious as to what it means, because i know its not the weight of the wheels, which would be like 300lbs right? im sure someone knows... its by the lug holes
-Jeff

[Bbandit]

im guessing thats its the maximum weight a single wheel can handle
620 x 4 is 2480kg
our cars are ~2700lb which means around 1227 kg

2480kg > 1227kg... sounds about right