diff --git a/assets/styles/utilities/dsfr-extensions/sizing.css b/assets/styles/utilities/dsfr-extensions/sizing.css
index 7fa07d1d6..df887d910 100644
--- a/assets/styles/utilities/dsfr-extensions/sizing.css
+++ b/assets/styles/utilities/dsfr-extensions/sizing.css
@@ -6,6 +6,10 @@
     max-width: calc(37 * 0.5rem);
 }
 
+.fr-x-max-w-38w {
+    max-width: calc(38 * 0.5rem);
+}
+
 .fr-x-max-w-156w {
     max-width: calc(156 * 0.5rem);
 }
diff --git a/src/Domain/Condition/VehicleSet.php b/src/Domain/Condition/VehicleSet.php
index b35953380..7f920417f 100644
--- a/src/Domain/Condition/VehicleSet.php
+++ b/src/Domain/Condition/VehicleSet.php
@@ -8,8 +8,6 @@
 
 class VehicleSet
 {
-    public const DEFAULT_MAX_WEIGHT = 3.5;
-
     public function __construct(
         private string $uuid,
         private Measure $measure,
diff --git a/src/Infrastructure/Form/Regulation/VehicleSetFormType.php b/src/Infrastructure/Form/Regulation/VehicleSetFormType.php
index 4c97c4a10..16cbd64cb 100644
--- a/src/Infrastructure/Form/Regulation/VehicleSetFormType.php
+++ b/src/Infrastructure/Form/Regulation/VehicleSetFormType.php
@@ -5,7 +5,6 @@
 namespace App\Infrastructure\Form\Regulation;
 
 use App\Application\Regulation\Command\VehicleSet\SaveVehicleSetCommand;
-use App\Domain\Condition\VehicleSet;
 use App\Domain\Regulation\Enum\CritairEnum;
 use App\Domain\Regulation\Enum\VehicleTypeEnum;
 use Symfony\Component\Form\AbstractType;
@@ -42,12 +41,20 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
             )
             ->add(
                 'heavyweightMaxWeight',
-                NumberType::class,
-                options: [
+                ChoiceType::class,
+                options : [
+                    'choices' => [
+                        3.5 => 3.5,
+                        7.5 => 7.5,
+                        19 => 19,
+                        26 => 26,
+                        32 => 32,
+                        44 => 44,
+                    ],
                     'label' => 'regulation.vehicle_set.heavyweightMaxWeight',
+                    'placeholder' => 'regulation.vehicle_set.heavyweightMaxWeight.placeholder',
                     'help' => 'regulation.vehicle_set.heavyweightMaxWeight.help',
                     'required' => false,
-                    'empty_data' => '3,5',
                 ],
             )
             ->add(
@@ -121,15 +128,6 @@ public function buildForm(FormBuilderInterface $builder, array $options): void
                     },
                 ),
             );
-
-        $builder
-            ->get('heavyweightMaxWeight')
-            ->addModelTransformer(
-                new CallbackTransformer(
-                    transform: fn ($maxWeight) => $maxWeight ?? VehicleSet::DEFAULT_MAX_WEIGHT,
-                    reverseTransform: fn ($value) => $value,
-                ),
-            );
     }
 
     private function getRestrictedTypesOptions(): array
diff --git a/templates/regulation/_vehicle_set_form.html.twig b/templates/regulation/_vehicle_set_form.html.twig
index 103788ef2..50f50e863 100644
--- a/templates/regulation/_vehicle_set_form.html.twig
+++ b/templates/regulation/_vehicle_set_form.html.twig
@@ -104,7 +104,7 @@
 
                     <fieldset
                         data-controller="section form-control"
-                        class="fr-fieldset fr-x-max-w-32w {{ restrictedDetailsClass['heavyGoodsVehicle'] }}"
+                        class="fr-fieldset fr-x-max-w-38w {{ restrictedDetailsClass['heavyGoodsVehicle'] }}"
                         aria-labelledby="heavyGoodsVehicle-details-legend-{{ index }}"
                         {% if 'heavyGoodsVehicle' not in form.restrictedTypes.vars.value %}hidden disabled{% endif %}
                     >
@@ -113,8 +113,8 @@
                         </legend>
                         <div class="fr-fieldset__element">
                             {{ form_row(form.heavyweightMaxWeight, {
-                                group_class: 'fr-input-group',
-                                widget_class: 'fr-input',
+                                group_class: 'fr-select-group',
+                                widget_class: 'fr-select',
                                 widget_suffix: 'common.unit.tons'|trans,
                             }) }}
                         </div>
diff --git a/tests/Integration/Infrastructure/Controller/Regulation/Fragments/AddMeasureControllerTest.php b/tests/Integration/Infrastructure/Controller/Regulation/Fragments/AddMeasureControllerTest.php
index 7bca86a79..d004f4ed8 100644
--- a/tests/Integration/Infrastructure/Controller/Regulation/Fragments/AddMeasureControllerTest.php
+++ b/tests/Integration/Infrastructure/Controller/Regulation/Fragments/AddMeasureControllerTest.php
@@ -643,10 +643,28 @@ public function testInvalidVehicleSetBlankRestrictedTypes(): void
         $saveButton = $crawler->selectButton('Valider');
         $form = $saveButton->form();
         $values = $form->getPhpValues();
-        $this->assertSame($values['measure_form']['vehicleSet']['heavyweightMaxWeight'], '3,5');
         $this->assertStringContainsString('Veuillez spécifier un ou plusieurs véhicules concernés.', $crawler->filter('#measure_form_vehicleSet_restrictedTypes_error')->text());
     }
 
+    public function testInvalidVehicleSetBlankHeavyweightMaxWeight(): void
+    {
+        $client = $this->login();
+        $crawler = $client->request('GET', '/_fragment/regulations/' . RegulationOrderRecordFixture::UUID_TYPICAL . '/measure/add');
+        $this->assertResponseStatusCodeSame(200);
+        $this->assertSecurityHeaders();
+
+        $saveButton = $crawler->selectButton('Valider');
+        $form = $saveButton->form();
+        $values = $form->getPhpValues();
+        $values['measure_form']['type'] = 'noEntry';
+        $values['measure_form']['vehicleSet']['allVehicles'] = 'no';
+        $values['measure_form']['vehicleSet']['restrictedTypes'] = ['heavyGoodsVehicle'];
+
+        $crawler = $client->request($form->getMethod(), $form->getUri(), $values);
+        $this->assertResponseStatusCodeSame(422);
+        $this->assertStringContainsString('Cette valeur ne doit pas être vide.', $crawler->filter('#measure_form_vehicleSet_heavyweightMaxWeight_error')->text());
+    }
+
     public function testInvalidVehicleSetBlankOtherRestrictedTypeText(): void
     {
         $client = $this->login();
@@ -785,15 +803,13 @@ public function testInvalidVehicleSetCharacteristicsNotNumber(): void
         $values = $form->getPhpValues();
         $values['measure_form']['type'] = 'noEntry';
         $values['measure_form']['vehicleSet']['allVehicles'] = 'no';
-        $values['measure_form']['vehicleSet']['restrictedTypes'] = ['heavyGoodsVehicle', 'dimensions'];
-        $values['measure_form']['vehicleSet']['heavyweightMaxWeight'] = 'not a number';
+        $values['measure_form']['vehicleSet']['restrictedTypes'] = ['dimensions'];
         $values['measure_form']['vehicleSet']['maxWidth'] = 'true';
         $values['measure_form']['vehicleSet']['maxLength'] = [12];
         $values['measure_form']['vehicleSet']['maxHeight'] = '2.4m';
 
         $crawler = $client->request($form->getMethod(), $form->getUri(), $values);
         $this->assertResponseStatusCodeSame(422);
-        $this->assertStringContainsString('Veuillez saisir un nombre.', $crawler->filter('#measure_form_vehicleSet_heavyweightMaxWeight_error')->text());
         $this->assertStringContainsString('Veuillez saisir un nombre.', $crawler->filter('#measure_form_vehicleSet_maxWidth_error')->text());
         $this->assertStringContainsString('Veuillez saisir un nombre.', $crawler->filter('#measure_form_vehicleSet_maxLength_error')->text());
         $this->assertStringContainsString('Veuillez saisir un nombre.', $crawler->filter('#measure_form_vehicleSet_maxHeight_error')->text());
@@ -811,15 +827,13 @@ public function testInvalidVehicleSetCharacteristicsNotPositive(): void
         $values = $form->getPhpValues();
         $values['measure_form']['type'] = 'noEntry';
         $values['measure_form']['vehicleSet']['allVehicles'] = 'no';
-        $values['measure_form']['vehicleSet']['restrictedTypes'] = ['heavyGoodsVehicle', 'dimensions'];
-        $values['measure_form']['vehicleSet']['heavyweightMaxWeight'] = -1;
+        $values['measure_form']['vehicleSet']['restrictedTypes'] = ['dimensions'];
         $values['measure_form']['vehicleSet']['maxWidth'] = -0.1;
         $values['measure_form']['vehicleSet']['maxLength'] = -2.3;
         $values['measure_form']['vehicleSet']['maxHeight'] = -12;
 
         $crawler = $client->request($form->getMethod(), $form->getUri(), $values);
         $this->assertResponseStatusCodeSame(422);
-        $this->assertStringContainsString('Cette valeur doit être supérieure ou égale à zéro.', $crawler->filter('#measure_form_vehicleSet_heavyweightMaxWeight_error')->text());
         $this->assertStringContainsString('Cette valeur doit être supérieure ou égale à zéro.', $crawler->filter('#measure_form_vehicleSet_maxWidth_error')->text());
         $this->assertStringContainsString('Cette valeur doit être supérieure ou égale à zéro.', $crawler->filter('#measure_form_vehicleSet_maxLength_error')->text());
         $this->assertStringContainsString('Cette valeur doit être supérieure ou égale à zéro.', $crawler->filter('#measure_form_vehicleSet_maxHeight_error')->text());
diff --git a/translations/messages.fr.xlf b/translations/messages.fr.xlf
index 868e7be03..2c752b90c 100644
--- a/translations/messages.fr.xlf
+++ b/translations/messages.fr.xlf
@@ -1914,13 +1914,17 @@
                 <source>regulation.vehicle_set.restricted_types.help</source>
                 <target>Spécifiez les véhicules pour lesquels la restriction s'applique :</target>
             </trans-unit>
+            <trans-unit id="regulation.vehicle_set.heavyweightMaxWeight.placeholder">
+                <source>regulation.vehicle_set.heavyweightMaxWeight.placeholder</source>
+                <target>Sélectionner le poids</target>
+            </trans-unit>
             <trans-unit id="regulation.vehicle_set.heavyweightMaxWeight">
                 <source>regulation.vehicle_set.heavyweightMaxWeight</source>
                 <target>Poids maximum</target>
             </trans-unit>
             <trans-unit id="regulation.vehicle_set.heavyweightMaxWeight.help">
                 <source>regulation.vehicle_set.heavyweightMaxWeight.help</source>
-                <target>Spécifier le poids maximum autorisé</target>
+                <target>La restriction s'applique aux véhicules dont le PTAC est supérieur à ...</target>
             </trans-unit>
             <trans-unit id="regulation.vehicle_set.maxWidth">
                 <source>regulation.vehicle_set.maxWidth</source>
@@ -1972,7 +1976,7 @@
             </trans-unit>
             <trans-unit id="regulation.vehicle_set.type.heavyGoodsVehicle">
                 <source>regulation.vehicle_set.type.heavyGoodsVehicle</source>
-                <target>Poids lourds</target>
+                <target>Poids</target>
             </trans-unit>
             <trans-unit id="regulation.vehicle_set.type.dimensions">
                 <source>regulation.vehicle_set.type.dimensions</source>