What width Front rims for Slim Mini Spikes ?

[Dandare]

I know it's a basic question for most but all i've been using are Stagger Ribs & Ribs on my local track.

Basically i want to mount Mini Spike 2 - Slims (Part No: U6550) to my Ansmann front rims (Part No: 125000431) but can't quite see whether these front wheels need to be cut down or not, it looks like they do tbh as they look a bit stretched when i dummy mount them.

Thanks,

Dan.