Mesh stretches oddly when imported

HI, I’ve been trying to use some car models I created in blender to learn Unreal’s vehicle workflow. But when I import the models as skeletal meshes the wheels stretch on the vertical axis. I can’t find any other cases of this happening on the internet from what I’ve searched so it’s not clear whether it is an importing problem or some setting in Unreal that I’m overlooking. In the link are screenshots from blender and Unreal Editor.

Also, I have set an armature in blender and done all the vertex painting to separate the wheel mesh from the car body and it has made no difference. Other car models I have made do the same thing.

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