Tire Max Load and GAWR...

You are only legally allowed the lesser of either the tire rating or the axle rating.

 

Run them up to 130 psi. And you’ll be fine.

 

That’s bad advice. Tires and axles have a rating for a reason. And the DOT will look at each to determine what is legal.

 

That not bad advice. Semi truck tires have a rating at a particular pressure. There will be a pressure and weight rating somewhere on the internet for that size and brand. But even if it’s not. It’s 600 pounds over. That’s nothing. Plus I’m willing to bet he doesn’t carry 24,000 on that steer. Also most float tires run 130 psi anyway. And dot isn’t stopping a dam fire truck to do an inspection

 

I stand by both my comments.

 

I assume those are 425’s on the steer. What tires were on it to begin with? Most truck manufacturers especially vocational truck over build the components. So the will spec say a 22 or 24,000 pound steer even though you won’t actually be loading but 18-20,000 on it. Like I said. You need to scale it if you want peace of mind. But I don’t believe you will get a 425 rated any heavier. You will have to go to a 445 to get 12,000 per tire. I personally think you are over thinking it, but I’m sure some will tell you that you are going to kill a bus full of orphans. Scale it, or leave them or spend another 2600 to change them. The choice is yours. And I’m bowing out, because I don’t need to argue with the orphan crowd.

 

Without knowing the actual weight you’re carrying on the steer axle nobody can answer your question. Your axle is rated for 24k. The “limit” on your steer axle is tires or weight rating, whichever is lower. In this case your tires are lower so that’s your legal weight limit. If you had higher rated tires then your 24k axle would be your legal limit.

Go weigh the fire truck and see what the actual weight is. Then you’ll know if the tires are fine or not.