Which tyres for polished gym floor

[neallewis]

Any Schumacher yellow compound tyre should work. You want them to wear sufficiently so the spikes/pins go to a flat, not bald, but a flat edge on the pin or spike. If the floor surface is dusty, a larger spike/pin works better. New tyres will need breaking in, and used ones break in faster. I find tyres previously run on carpet or astro the pin or spike profile wears differently (to a directional point), and you want that point to wear flat. Then they work best. Wash any used outdoor tyres in water beforehand to clean them up.
For 2wd front tyres, its best to match up with the rear, so mini pin, dart or spike to match the rear, rather than (cut) staggers, etc.
If you find the surface too dusty, it may be best to brush the floor before you lay the track down.