Front axle loads

Three axle 6 x 2 Artic tractors (Prime Movers) are much the norm with tri-axle trailers running up to 44 tonnes in the UK. The 11.00 - 20 16 ply rating cross-ply tyres on my 1963 Foden timber tractor are rated for 7165 lbs/3250 kg when used singly on a steer axle. Quite a number of Artics here are fitted with over-width low-profile tyres on steer axle which probably have a higher load rating.

Saw a big Meales concrete pump the other day, think a Mercedes chassis.
Three steer axles, tandem drive then a couple of steerable trailing axles.
Wonder how they worked out those capacities.

The picture of this Mack pumper was taken in 2016 so they may be bigger today.. The last two axles were self steering..

I found this on their site. Did a screen grab.