Vertical saws are production saws on sub 8 inch flanges with steel. Coolant same reason as machining- cool blade, lubricate blade, and knock chips out of teeth. Steel sticks in gullets bad at around 300 sfm without coolant. Saw blades suggest running 1/2 that without coolant.
All our saws minus small horizontal have just ring grooves on wheel about 1/8 “ apart. I guess in theory a radial tire pattern would be better, if you could make it perfect to not track the blade.
1/2 inch blade maybe shrink the dustance? Reason I would just let your grooves be as is. Will not hurt anything.
I was maintenance helper at small factory and the horizontals had a slow rotating wire wheel the brushed the chips off the blade - but no cooling.
I'm still not clear, for coolant hydroplaning (like car tire on wet road), the grooves would be in the tire??? If in the steel wheel wouldn't do anything since covered with tire??? NOTE: Semantics: I use Wheel and Tire to differentiate.
My grooves make the wheel slightly negatively crowned. If I crown a flat tire, I'll have to remove a bit of extra material. Also since wheel should be flat on a WT, would be nice to epoxy level.
I can't find any confirmation that crowning both tires is not necessary. If top crowning is actually optional, Decision for top becomes: 1) Epoxy the grooves? and 2) Rubber or Urethane tire? NOTE: I could try not crowning top and see how the blade tracks w/only crowned bottom.
The other quicker solutions for some additional cost is use crowned urethane tires on both wheels. I don't like this because the bottom wheel rubber tire is in good shape and only needs crowned since never was. I don't like the waste of undoing something that is good working order.
I have a bunch of other irons in the fire so the decision process is spanning many days.