Speaker Spike Bases


I have SF Olympica llls on tile floors with the original spikes setting in round metal bases with either a very thin rubber or felt pad under the base. 
Should I try thicker rubber bases on the ends of these spikes because they are sitting on tile floors? 
Would this improve the bass or overall sound quality?

If recommended to try a rubber base, would hard or softer rubber be better. Can anyone recommend a source?

Thanks for the feedback. 




128x128teboerio
If you can determine the pitch of the threaded inserts, you could get Herbie's threaded glider feet.
Use spike shoes/saucers with material on the bottom that keeps the speakers from sliding on the tile floors. Felt may do the job but rubber may be a better choice.
Others might disagree but I would try a 3" thick maple butcher block under the speakers, and the speakers with spikes sitting on the butcher blocks. You could also try the set up I described above with three or four per butcher block (cork rubber cork) blocks under the butcher blocks.
As an example #1: https://www.audiogon.com/listings/lis997ac-sq-products-isol-pads-set-of-4-high-quality-isolation-pad...
#2: https://www.audiogon.com/stores/bba
The above butcher blocks come with "4 Free Anti-Vibration Pads With Every Platform".