Wheel size?

[Fasthound1963OTS]

I have wire wheels on my bastardized survivor 1963 OTS. They are manufactured under license from Dunlop. I’m trying to figure out the rim width without having to unmount a tire and actually measuring the inner width. I’ve attached a photo of the stamping numbers inside the rim of the spare wheel/tire. All of the wheels say 5K x 15 XWJ so I’m hoping that means 5” width....does it?

Any help would be appreciated.

Thanks,
Kevin

[Heuer]

5K is indeed 5" width.

[Fasthound1963OTS]

Thanks David!