Predictika · Earthmover tires for articulated dump trucks

An AI sales agent's articulated dump truck tire quote, checked before it goes out

An AI sales agent prepares a tire quote for a quarry or earthmoving customer: the machine, its payload, the tire size, the ply or star rating and the cold inflation pressure on each axle, and the haul conditions. Before the quote goes out, the agent sends it to Predictika, which checks it against a declarative model of the Titan usage chart for articulated dump trucks and returns a verdict, every reason and the minimums it read from the chart.

Scope: Titan load and inflation chart for articulated dump trucks: 166 machine models, 12 bias and radial tire sizes, ply or star ratings, minimum cold inflation pressures by axle, and the standard service conditions. See everything this validator covers

This validator models a tire quote for an articulated dump truck (ADT), based on the Titan Load and Inflation Tables and the Titan OTR Tires Databook, not just the scenarios shown below.

  • Machine, tire size and payload — the chart lists each machine model with a tire size and a payload in tons; a combination that is not in the chart, or a machine with none of its axles ordered, is blocked.
  • Ply or star rating — for each axle ordered (front, middle, rear) the rating must be at least the minimum the chart shows. Bias tires use ply ratings and radial tires use stars; the validator compares the numbers.
  • Cold inflation pressure — for each axle ordered, the pressure must be at least the chart minimum. The chart gives minimums only, so the validator does not check a maximum.
  • Entries that need a person — where the chart tells the reader to contact Titan, shows no entry for an axle, or lists two conflicting rows (26.5R25 on a Caterpillar 735B at 36 tons), the quote goes to a person for approval.
  • Service conditions — the chart is for standard earthmover service. A haul of 2.5 miles or more, or a speed of 30 mph or more, goes to a person, because Titan asks for a specific recommendation in that case.
  • Stated figures — if the quote states a rear minimum pressure, it is compared with the chart value.

Any ADT tire quote that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Titan publishes none, so this page shows no price build-up), graders, loaders, scrapers, rigid dump trucks and the other load tables in the databook, rated load per tire, maximum pressures, speed and distance ratings of a tire, and tire availability. The chart is dated 2022 and 2024 editions that print identical ADT figures; a later edition is not checked.

The AI sales agentBuilds the tire quote from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

8 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A usage chart with one row per machine, tire size and payloadOnly with care
The chart has hundreds of rows. A rules-based CPQ needs each row loaded as data and kept in step with every new edition, and a missing combination has to be caught by a separate rule.		The chart rows are part of the model, and a combination that is not in the chart is found on every call.
Ply and star ratings that differ by axleOnly with workarounds
The front, middle and rear axles often have different minimums, and a rule is needed for each axle, in each tire family.		Each ordered axle is compared with its own row of the chart on every call.
Chart cells that say contact Titan, or have no entryOnly with workarounds
A rule that compares a pressure with a number breaks or silently passes when the cell holds no number. Each case needs its own rule to route the quote to a person.		These cells are modeled as such, and the quote is routed to a person for approval instead of being passed.
Service conditions outside the chartOnly with care
Haul distance and speed limits are conditions on the whole quote, and they are usually left to the sales person to remember.		The haul distance and speed are checked together with the rest of the quote on every call.
A rear minimum the quote statesOnly with care
The stated figure has to be looked up again and compared with the stated one.		The stated figure is a field in the request, compared with the chart value on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the quote is saved or a step is completed, so a person often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1The front tires are set to 45 psi; the Titan chart minimum cold inflation for this machine is 50 psi.
2The front tires have a ply or star rating of 20; the Titan chart minimum for this machine is 26.
3The middle axle tires have a ply or star rating of 26; the Titan chart minimum for this machine is 32.
4The rear tires have a ply or star rating of 26; the Titan chart minimum for this machine is 32.
5The rear tires are set to 50 psi; the Titan chart minimum cold inflation for this machine is 55 psi.
6The middle axle tires are set to 50 psi; the Titan chart minimum cold inflation for this machine is 55 psi.
7The front tires are set to 40 psi; the Titan chart minimum cold inflation for this machine is 45 psi.
8The front tires have a ply or star rating of 1; the Titan chart minimum for this machine is 2.
9The rear tires have a ply or star rating of 1; the Titan chart minimum for this machine is 2.
10The Titan usage chart for the selected tire size lists no entry for this machine at the stated payload.
11The order has no tires on any axle; at least one axle needs tires.
12For at least one ordered axle the Titan chart gives no firm minimum (it says to contact Titan Technical Services, shows no entry, or lists conflicting rows); a person should confirm the ply or star rating and pressure with Titan.
13The front tires have a ply or star rating of 16; the Titan chart minimum for this machine is 20.
14The chart is for standard earthmover service, under 2.5 miles and under 30 mph; Titan asks for OTR Field Engineering to give a specific recommendation for other applications.
15The order states a rear minimum of 50 psi; the Titan chart gives 55 psi.
16The front tires are set to 35 psi; the Titan chart minimum cold inflation for this machine is 40 psi.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Pressures below the chart minimums: Volvo A40G radial tires set below the chart pressures

    
The agent's request. Please quote radial 29.5R25 tires for a Volvo A40G with a payload of 43.0 tons, for Ridgeline Aggregates. The quote has the front axle at 1 star rating and 45 psi, the middle axle at 2 star rating and 65 psi, and the rear axle at 2 star rating and 55 psi. The truck hauls 1.5 miles at 20 mph. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Front inflation below the minimum. The front tires are set to 45 psi; the Titan chart minimum cold inflation for this machine is 50 psi.
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  • Rear inflation below the minimum. The rear tires are set to 55 psi; the Titan chart minimum cold inflation for this machine is 65 psi.
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2. Pressures below the chart minimums: The agent resubmits after fixing the errors

    
The agent's request. Please quote radial 29.5R25 tires for a Volvo A40G with a payload of 43.0 tons, for Ridgeline Aggregates. The quote has the front axle at 1 star rating and 50 psi, the middle axle at 2 star rating and 65 psi, and the rear axle at 2 star rating and 65 psi. The truck hauls 1.5 miles at 20 mph. The quote states a rear minimum of 65 psi. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Chart summary. The Titan chart gives minimum cold inflation pressures of 50 psi at the front and 65 psi at the rear for this machine and tire size.
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3. Ply ratings and pressures on a bias fitment: Terex 4066B bias tires with low ply ratings and a low rear pressure

    
The agent's request. Please quote bias 26.5-25 tires for a Terex 4066B with a payload of 40.0 tons, for Ridgeline Aggregates. The quote has the front axle at 20 ply rating and 45 psi, the middle axle at 32 ply rating and 55 psi, and the rear axle at 32 ply rating and 50 psi. The truck hauls 1.5 miles at 20 mph. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Front ply or star rating below the minimum. The front tires have a ply or star rating of 20; the Titan chart minimum for this machine is 26.
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  • Middle ply or star rating below the minimum. The middle axle tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44.
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  • Rear ply or star rating below the minimum. The rear tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44.
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  • Rear inflation below the minimum. The rear tires are set to 50 psi; the Titan chart minimum cold inflation for this machine is 55 psi.
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4. Ply ratings and pressures on a bias fitment: The agent resubmits after fixing the errors

    
The agent's request. Please quote bias 26.5-25 tires for a Terex 4066B with a payload of 40.0 tons, for Ridgeline Aggregates. The quote has the front axle at 26 ply rating and 45 psi, the middle axle at 44 ply rating and 55 psi, and the rear axle at 32 ply rating and 55 psi. The truck hauls 1.5 miles at 20 mph. The quote states a rear minimum of 55 psi. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Rear ply or star rating below the minimum. The rear tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44.
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5. Ply ratings and pressures on a bias fitment: The agent resubmits after fixing the errors

    
The agent's request. Please quote bias 26.5-25 tires for a Terex 4066B with a payload of 40.0 tons, for Ridgeline Aggregates. The quote has the front axle at 26 ply rating and 45 psi, the middle axle at 44 ply rating and 55 psi, and the rear axle at 44 ply rating and 55 psi. The truck hauls 1.5 miles at 20 mph. The quote states a rear minimum of 55 psi. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Chart summary. The Titan chart gives minimum cold inflation pressures of 45 psi at the front and 55 psi at the rear for this machine and tire size.
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6. Service conditions outside the chart: Deere 250C on a 3 mile haul with a low front pressure

    
The agent's request. Please quote bias 23.5-25 tires for a Deere 250C with a payload of 25.0 tons, for Ridgeline Aggregates. The quote has the front axle at 20 ply rating and 30 psi, the middle axle at 16 ply rating and 30 psi, and the rear axle at 20 ply rating and 35 psi. The truck hauls 3.0 miles at 20 mph. The quote states a rear minimum of 35 psi. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Front inflation below the minimum. The front tires are set to 30 psi; the Titan chart minimum cold inflation for this machine is 35 psi.
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  • Service outside the chart conditions. The chart is for standard earthmover service, under 2.5 miles and under 30 mph; Titan asks for OTR Field Engineering to give a specific recommendation for other applications.
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7. Service conditions outside the chart: The agent resubmits after fixing the errors

    
The agent's request. Please quote bias 23.5-25 tires for a Deere 250C with a payload of 25.0 tons, for Ridgeline Aggregates. The quote has the front axle at 20 ply rating and 35 psi, the middle axle at 16 ply rating and 30 psi, and the rear axle at 20 ply rating and 35 psi. The truck hauls 3.0 miles at 20 mph. The quote states a rear minimum of 35 psi. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Service outside the chart conditions. The chart is for standard earthmover service, under 2.5 miles and under 30 mph; Titan asks for OTR Field Engineering to give a specific recommendation for other applications.
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  • Chart summary. The Titan chart gives minimum cold inflation pressures of 35 psi at the front and 35 psi at the rear for this machine and tire size.
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8. Service conditions outside the chart: The agent resubmits after fixing the errors

    
The agent's request. Please quote bias 23.5-25 tires for a Deere 250C with a payload of 25.0 tons, for Ridgeline Aggregates. The quote has the front axle at 20 ply rating and 35 psi, the middle axle at 16 ply rating and 30 psi, and the rear axle at 20 ply rating and 35 psi. The truck hauls 2.0 miles at 20 mph. The quote states a rear minimum of 35 psi. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Chart summary. The Titan chart gives minimum cold inflation pressures of 35 psi at the front and 35 psi at the rear for this machine and tire size.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares a tire quote for a quarry or earthmoving customer: the machine, its payload, the tire size, and more. Before the quote goes out, the agent sends it to Predictika, which checks it against a declarative model of the Titan usage chart for articulated dump trucks and returns a verdict, every reason and the minimums it read from the chart.
    2. 
      
  2. I will start with the first request by the agent.
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  3. The agent says. Please quote bias 26.5-25 tires for a Terex 4066B with a payload of 40.0 tons, for Ridgeline Aggregates. The quote has the front axle at 20 ply rating and 45 psi, the middle axle at 32 ply rating and 55 psi. The rest of the request is on screen.
    4. 
      
  4. Before it goes out, the agent calls the validator.
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  5. Blocked, with four findings, all in one answer. The front tires have a ply or star rating of 20; the Titan chart minimum for this machine is 26. The middle axle tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44. The rear tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44. The other one is on screen.
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  6. The validator returned four blocking findings in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for ply and star ratings that differ by axle, a rules-based CPQ can do this only with workarounds.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the front axle ply rating to 26, the middle axle ply rating to 44 and the rear axle pressure to 55 psi. It sets the stated rear minimum pressure, as to 55 psi.
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  10. It calls the validator again.
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  11. Still blocked, with one finding, all in one answer. The rear tires have a ply or star rating of 32; the Titan chart minimum for this machine is 44.
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  12. Three findings cleared. Still blocking: rear ply or star rating below the minimum.
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  13. The agent resubmits once more.
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  14. The revised request. It changes the rear axle ply rating to 44.
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  15. It calls the validator once more.
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  16. This time the validator clears it.
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  17. The earlier finding is cleared, and the validator's figure matches the quote.
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  18. Four problems caught in one call, fixed in two passes, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    19.