[Yordan]

Hello! What's the biggest tyre size I can use with 17"x9" rims and a 5x5.5" bolt pattern (that's a bolt diameter of 9/16" or 14mm). The rig weights around 2 tons. Is there any chance that with a tyre bigger than 42" the bolts would snap?

 

[JayMcJay]

The lugs will not be your limiting strength factor. in nearly all axles balljoints, kingpins, knuckles, will fail before a properly tightened set of lug nuts. Axle shafts and u joints will fail well before all that stuff too.