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 # Class TireAPI

 Last update: 09.03.2026 

<a id="VM_API_Pre_TireAPI"></a>

Namespace: [VM.API.Pre](VM.API.Pre.md)  
Assembly: VM.API.Pre.dll

This class implements APIs for tire.

```csharp
public static class TireAPI

```

#### Inheritance

object ← [TireAPI](VM.API.Pre.TireAPI.md)

#### Extension Methods

[LinkPropertyItemCache.GetLinkProperties(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkProperties_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkPropertiesAndValues(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkPropertiesAndValues_System_Object_VM_Models_Pre_LinkPropertyType_), [LinkPropertyItemCache.GetLinkedObjects&lt;T&gt;(object, LinkPropertyType)](VM.Models.Pre.Cache.LinkPropertyItemCache.md#VM_Models_Pre_Cache_LinkPropertyItemCache_GetLinkedObjects__1_System_Object_VM_Models_Pre_LinkPropertyType_)

## Methods

### <a id="VM_API_Pre_TireAPI_CreateTire_VM_Managed_DAFUL_SubSystemDocument_System_String_System_String_VM_TMatrix_VM_Managed_DAFUL_Tire_WheelBodyBase_SideType_System_String_System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_VM_Models_Pre_ExpressionValueVariable__System_Nullable_System_Drawing_Color__VM_Managed_SymmetricType_System_Boolean_"></a> CreateTire(SubSystemDocument, string, string, TMatrix, SideType, string, ExpressionValueVariable?, ExpressionValueVariable?, ExpressionValueVariable?, ExpressionValueVariable?, ExpressionValueVariable?, ExpressionValueVariable?, ExpressionValueVariable?, Color?, SymmetricType, bool)

Create

```csharp
[NotNull(new string[] { "subSystemDocument" })]
[ExistFile(new string[] { "roadFile", "tirePropertyFile" })]
public static Obj CreateTire(this SubSystemDocument subSystemDocument, string roadFile, string tirePropertyFile, TMatrix transform, WheelBodyBase.SideType side = SideType.Left, string name = "", ExpressionValueVariable? cmOffset = null, ExpressionValueVariable? mass = null, ExpressionValueVariable? lxxlyy = null, ExpressionValueVariable? lzz = null, ExpressionValueVariable? wheelCenterOffset = null, ExpressionValueVariable? longitudinalVelocity = null, ExpressionValueVariable? spinVelocity = null, Color? color = null, SymmetricType symmetricType = SymmetricType.None, bool isInterface = false)

```

#### Parameters

`subSystemDocument` [SubSystemDocument](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMDFBase/SubSystemDocument.cs)

The  to create a tire force.

`roadFile` string

The road file of a tire force.

`tirePropertyFile` string

The tire property file of a tire force.

`transform` TMatrix

The transform of a tire force.

`side` [WheelBodyBase](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMDTire/WheelBodyBase.cs).[SideType](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/ClassicPre/Data/VMDTire/WheelBodyBase.cs)

The side of a tire force.

`name` string

The name of a leaf spring.

`cmOffset` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The CM Offset of a tire force.

`mass` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The mass of a tire force.

`lxxlyy` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The lxxlyy of a tire force.

`lzz` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The lzz of a tire force.

`wheelCenterOffset` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The wheel center offset of a tire force.

`longitudinalVelocity` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The longitudinal velocity of a tire force.

`spinVelocity` [ExpressionValueVariable](https://github.com/AnsysVirtualMotion/DAFUL/blob/9110677a5f6a53d7604f8dfd35b4c5fceb59e8e0/DAFUL/Pre/Data/VM.Models.Pre/Models/ExpressionValueVariable.cs)?

The spin velocity of a tire force.

`color` Color?

The color of a tire force.

`symmetricType` SymmetricType

The symmetric type of the new .

`isInterface` bool

'true' if it is interface body. Otherwise, 'false'.

#### Returns

[Obj](VM.API.Pre.Obj.md)

the new  object created by this API.

#### Exceptions

ArgumentNullException

Will be thrown if 'subSystemDocument' argument is null.

FileNotFoundException

Will be thrown if 'roadFile', 'tirePropertyFile' file does not exist.

ArgumentException

Will be thrown if the extension of 'roadFile' is not 'rdf' or if the extension of 'tirePropertyFile' is not 'tir'.

ArgumentException

Will be thrown if the magnitude of 'transform' X, Y, Z is equal to 0.

### <a id="VM_API_Pre_TireAPI_Reload_VM_API_Pre_Obj_System_String_"></a> Reload(Obj, string)

Reload.

```csharp
[NotNull(new string[] { "wheelBodyBase" })]
[MatchTypeObj(new object[] { "wheelBodyBase", typeof(WheelBodyBase) })]
public static void Reload(this Obj wheelBodyBase, string strBodyInfo)

```

#### Parameters

`wheelBodyBase` [Obj](VM.API.Pre.Obj.md)

The  to reload a wheel body info.

`strBodyInfo` string

The string body information of a wheel.

#### Exceptions

ArgumentNullException

Will be thrown if 'wheelBodyBase' is null.

ArgumentException

Will be thrown if the type of 'wheelBodyBase' is not .