Fix lower limit for wheel moment of inertia

GameData/KSPCommunityFixes/Settings.cfg

@@ -240,6 +240,11 @@ KSP_COMMUNITY_FIXES
   // Fix the Alt+F12 console input field stealing input when a console entry is added
   DebugConsoleDontStealInput = true
 
+  // Fix the hard-coded lower limit for the moment of inertia of wheels being too large (0.01 t*m^2) and
+  // causing incorrectly large forces on small aircraft during touchdown. This fix should prevent your craft from
+  // pitching up or down unexpectedly when touching down.
+  WheelInertiaLimit = true
+
   // ##########################
   // Obsolete bugfixes
   // ##########################

KSPCommunityFixes/BugFixes/WheelInertiaLimit.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using HarmonyLib;
+using VehiclePhysics;
+using UnityEngine;
+
+namespace KSPCommunityFixes
+{
+    public class WheelInertiaLimit : BasePatch
+    {
+        protected override Version VersionMin => new Version(1, 12, 0);
+
+        protected override void ApplyPatches()
+        {
+            AddPatch(PatchType.Postfix, typeof(VehiclePhysics.Wheel), nameof(VehiclePhysics.Wheel.RecalculateConstants));
+        }
+
+        static void Wheel_RecalculateConstants_Postfix(VehiclePhysics.Wheel __instance)
+        {
+            __instance.I = __instance.mass * __instance.radius * __instance.radius * 0.5f;
+
+            if (__instance.I < 0.00001f)
+            {
+                __instance.I = 0.00001f;
+            }
+
+            __instance.invI = 1f / __instance.I;
+        }
+    }
+}

KSPCommunityFixes/KSPCommunityFixes.csproj

@@ -128,6 +128,7 @@
     <Compile Include="BugFixes\ChutePhantomSymmetry.cs" />
     <Compile Include="BugFixes\CorrectDragForFlags.cs" />
     <Compile Include="BugFixes\DebugConsoleDontStealInput.cs" />
+    <Compile Include="BugFixes\WheelInertiaLimit.cs" />
     <Compile Include="BugFixes\DragCubeLoadException.cs" />
     <Compile Include="BugFixes\EVAConstructionMass.cs" />
     <Compile Include="BugFixes\FastAndFixedEnumExtensions.cs" />