Predictika · Commercial truck tires

An AI sales agent's fleet tire order, checked before it goes out

An AI sales agent prepares a tire order for a trucking fleet: a Bridgestone commercial truck tire for a steer, drive or trailer axle, with the rim width, single or dual fitment, dual spacing, inflation pressure, operating speed, the load on the axle, and the axle capacity and tire count it states. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the figures in the public Bridgestone Truck Tire Data Book and returns a verdict, every reason and the figures it computed.

Scope: Bridgestone R213, R283S and R268 Ecopia, R238, M713 Ecopia, M726 ELA and R123 Ecopia truck tires: axle position, approved rim widths, speed, dual spacing, inflation pressure and load per axle. See everything this validator covers

This validator models orders for 17 size and load range rows of the Bridgestone commercial truck tires named here, based on the public Bridgestone Truck Tire Data Book (2022, version 22.1), not just the scenarios shown below.

  • Published rows — R213 Ecopia (11R22.5 LRG and LRH, 11R24.5 LRH), R283S Ecopia (11R22.5 and 11R24.5 LRH), R268 Ecopia (11R22.5 LRG and LRH, 12R22.5 LRH, 11R24.5 LRH), R238 (225/70R19.5 and 245/70R19.5 LRG), M713 Ecopia (11R22.5 and 11R24.5 LRG), M726 ELA (11R22.5 LRG, 11R24.5 LRH) and R123 Ecopia (11R22.5 and 11R24.5 LRG). Each row gives its axle positions, maximum speed, approved rim widths, minimum dual spacing and maximum load and pressure.
  • Position, rim and speed — drive tires (M713, M726 ELA) only in drive positions, the trailer tire (R123) only in trailer positions, the others in any position the data book lists; the rim width must be on the approved list for the tire size; the speed must not exceed the tire's maximum (87 mph for the R238 225/70R19.5, 75 mph for the others).
  • Pressure and load — the inflation pressure must be one the data book's load and inflation table lists for that size and fitment, not above the tire's maximum and not above the rim manufacturer's rating; the axle load must not exceed the table's load per tire at that pressure times the tires on the axle (two for single, four for dual); an order that does not state the rim rating goes to a person.
  • Spacing and stated figures — dual spacing must be at least the minimum for the tire size, adjusted by a tenth of an inch for each quarter inch the rim differs from the design rim, as the data book's note directs; the axle capacity and the tire count the order states must equal the computed ones.

Any order for these tires that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (the data book lists none, so this page shows no price build-up or line-item quote), other Bridgestone and Firestone tire lines and sizes, retreads, other pressures than those printed in the tables, mixed tire sizes on one axle, fleet program contract terms, and the rim manufacturer's own limits beyond the rating the order states.

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

7 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
Tire, position, rim and speed limits for 17 published rowsOnly with workarounds
Each tire row has its own axle positions, approved rim widths and maximum speed. A rules-based CPQ needs a compatibility table or one rule per row, and a new data book edition means editing all of them.		The tire row, the position, the rim and the speed arrive in one request and are checked against the published row on every call.
Axle load against the pressure tableOnly with workarounds
The load a tire carries depends on the size, single or dual, and the pressure, and the table lists a different load at every pressure step. That is a lookup table per size, and a pressure the table does not list needs its own rule.		The table is part of the model; the load at the stated pressure is looked up, compared with the axle load, and an unlisted pressure is its own finding.
Minimum dual spacing adjusted for the rim widthOnly with care
The minimum is printed for the design rim and shifts with the rim width, so a rule has to know each size's design rim and recompute.		The adjusted minimum is computed for the selected rim on every call.
Axle capacity and tire count the order statesOnly with care
The stated figures are derived from the tire, the fitment, the pressure and the axles, so a rule has to recompute them and compare.		The stated figures are fields in the request, compared with the computed ones on every call.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the order 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 data book lists this tire in its drive positions only; it is not listed for steer or trailer positions.
2The data book lists this tire in its trailer positions only; it is not listed for steer or drive positions.
3A wheel width of 900 hundredths of an inch is not on the approved rim width list for this tire size.
4The duals are spaced 12.1 inches apart; the minimum for this tire on this rim is 12.2 inches.
5The duals are spaced 12.4 inches apart; the minimum for this tire on this rim is 12.5 inches.
6The duals are spaced 13.1 inches apart; the minimum for this tire on this rim is 13.2 inches.
7The operating speed of 76 mph is above the tire maximum of 75 mph.
8The operating speed of 88 mph is above the tire maximum of 87 mph.
9An inflation pressure of 110 psi is above the maximum of 105 psi for this tire in this fitment.
10The data book load and inflation table gives no load for this tire at 102 psi.
11The axle load of 22,600 lbs is above the 22,500 lbs the data book table gives for this tire at 100 psi.
12The inflation pressure of 105 psi is above the wheel manufacturer rating of 100 psi; the data book says never to exceed the rim manufacturer limits.
13The order does not state the wheel manufacturer rating; the data book says never to exceed the rim manufacturer limits, so a person should confirm the wheels.
14The order states an axle capacity of 22,500 lbs; the data book table gives 23,360 lbs at this pressure.
15The order states 4 tires in total; the axles and fitment give 8.
16The order has 0 axles; at least 1 is needed.
17The data book load and inflation table gives no load for this tire at 75 psi.
18The operating speed of 80 mph is above the tire maximum of 75 mph.
19An inflation pressure of 125 psi is above the maximum of 105 psi for this tire in this fitment.
20The duals are spaced 10 inches apart; the minimum for this tire on this rim is 12.8 inches.

  

  

    
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. Pickup and delivery truck: Dual R238 225/70R19.5 on a pickup and delivery truck

    
The agent's request. Please quote Bridgestone R238 225/70R19.5 LRG tires for one drive axle, dual fitment, on 6.75-inch rims, inflated to 110 psi, for an axle load of 14,000 lbs at 88 mph, with the duals spaced 10 inches apart. The order states an axle capacity of 15,000 lbs and 4 tires in total. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Speed above the tire maximum. The operating speed of 88 mph is above the tire maximum of 87 mph.
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  • Dual spacing too tight. The duals are spaced 10 inches apart; the minimum for this tire on this rim is 10.3 inches.
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  • Wheel rating not stated. The order does not state the wheel manufacturer rating; the data book says never to exceed the rim manufacturer limits, so a person should confirm the wheels.
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2. Pickup and delivery truck: The agent resubmits after fixing the errors

    
The agent's request. Please quote Bridgestone R238 225/70R19.5 LRG tires for one drive axle, dual fitment, on 6.75-inch rims, inflated to 110 psi, for an axle load of 14,000 lbs at 85 mph, with the duals spaced 10.4 inches apart. The order states an axle capacity of 15,000 lbs and 4 tires in total. It is ready to send.

    
Verdict: Needs approval.

    
    
      
  • Wheel rating not stated. The order does not state the wheel manufacturer rating; the data book says never to exceed the rim manufacturer limits, so a person should confirm the wheels.
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  • Order summary. 4 tires on 1 axle at 110 psi; the data book table gives 15,000 lbs per axle against 14,000 lbs needed.
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3. Pickup and delivery truck: The agent resubmits after fixing the errors

    
The agent's request. Please quote Bridgestone R238 225/70R19.5 LRG tires for one drive axle, dual fitment, on 6.75-inch rims, inflated to 110 psi, for an axle load of 14,000 lbs at 85 mph, with the duals spaced 10.4 inches apart. The rims are rated to 130 psi. The order states an axle capacity of 15,000 lbs and 4 tires in total. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 4 tires on 1 axle at 110 psi; the data book table gives 15,000 lbs per axle against 14,000 lbs needed.
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4. Steer axle tire: M713 Ecopia 11R22.5 quoted for a steer axle

    
The agent's request. Please quote Bridgestone M713 Ecopia 11R22.5 LRG tires for one steer axle, single fitment, on 8.25-inch rims, inflated to 105 psi, for an axle load of 12,000 lbs at 65 mph. The rims are rated to 130 psi. The order states an axle capacity of 12,350 lbs and 2 tires in total. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Drive tire in another position. The data book lists this tire in its drive positions only; it is not listed for steer or trailer positions.
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5. Steer axle tire: The agent resubmits after fixing the errors

    
The agent's request. Please quote Bridgestone R213 Ecopia 11R22.5 LRG tires for one steer axle, single fitment, on 8.25-inch rims, inflated to 105 psi, for an axle load of 12,000 lbs at 65 mph. The rims are rated to 130 psi. The order states an axle capacity of 12,350 lbs and 2 tires in total. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 2 tires on 1 axle at 105 psi; the data book table gives 12,350 lbs per axle against 12,000 lbs needed.
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6. Tandem drive axles: Two drive axles on M726 ELA 11R24.5 at 125 psi

    
The agent's request. Please quote Bridgestone M726 ELA 11R24.5 LRH tires for two drive axles, dual fitment, on 8.25-inch rims, inflated to 125 psi, for an axle load of 26,000 lbs at 65 mph, with the duals spaced 12.5 inches apart. The rims are rated to 130 psi. The order states an axle capacity of 26,440 lbs and 8 tires in total. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Pressure above the tire maximum. An inflation pressure of 125 psi is above the maximum of 120 psi for this tire in this fitment.
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7. Tandem drive axles: The agent resubmits after fixing the errors

    
The agent's request. Please quote Bridgestone M726 ELA 11R24.5 LRH tires for two drive axles, dual fitment, on 8.25-inch rims, inflated to 120 psi, for an axle load of 26,000 lbs at 65 mph, with the duals spaced 12.5 inches apart. The rims are rated to 130 psi. The order states an axle capacity of 26,440 lbs and 8 tires in total. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Order summary. 8 tires on 2 axles at 120 psi; the data book table gives 26,440 lbs per axle against 26,000 lbs needed.
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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 order for a trucking fleet: a Bridgestone commercial truck tire for a steer, drive or trailer axle. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the figures in the public Bridgestone Truck Tire Data Book and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
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  3. The agent says. Please quote Bridgestone R238 225/70R19.5 LRG tires for one drive axle, dual fitment, on 6.75-inch rims, inflated to 110 psi. The order states an axle capacity of 15,000 lbs and 4 tires in total. The rest of the request is on screen.
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  4. Before it goes out, the agent calls the validator.
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  5. Blocked, with two findings and one approval, all in one answer. The operating speed of 88 mph is above the tire maximum of 87 mph. The duals are spaced 10 inches apart; the minimum for this tire on this rim is 10.3 inches.
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  6. The validator returned two blocking findings and one approval 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 tire, position, rim and speed limits for 17 published rows, 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 operating speed to 85 mph and the dual spacing to 10.4 inches.
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  10. It calls the validator again.
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  11. Not blocked, but held for a person.
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  12. The two blocking findings are cleared; one approval remains for a person: wheel rating not stated.
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  13. The agent resubmits once more.
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  14. The revised request. It changes the rim manufacturer rating to 130 psi.
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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. Three 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.
    19.