Tire Tube Question

Folks,

I just came across a set of Michelin 185R15 X redline tires that I plan on using for rollers at a reasonable price. However, they are tube tires. My current rollers are tubless on 5" rims.

Question - is there a certain tube I need to be compatible with the wire wheels?
Best Source and P/N?
1966 S1 FHC.
Thanks,
Nick

If they are just rollers, go to an implement shop and get the closest size they have.