Rice trailer wheels/tyres

[meleeka]

My Rice trailer tyres need replacing. The size on them says 165R13C 94/920 tubeless. I can find tyres that are 165R13C 94N but I'm not sure what the last bit means? I also need a spare tyre, but not sure where to look. Do any other wheels fit? (it's 4 spoke).

Thanks in advance.

 

[The Xmas Furry]

My DH says it's worth you checking with a reputable trailer dealer or person who regularly services and safety checks trailers.
(He is suprised they are 13s on there).