>>20762881Fuck no. Experiment a lot.
252 in HP on any pokemon that is weak to stealth rocks is forbidden. You want an odd HP number.
Furthermore, if you're not running max speed, you should probably be putting like 20-60 points into speed to speed creep other pokemon in the speed tier, or speed tier above you, that run 0 speed. I do this on slowbro/king a lot, but any pokemon in a lower speed tier can benefit from this since very few people run more than 4 speed EVs on them.
Also, any pokemon that boosts speed should have math done on their speed EVs. If you find out that after one dragon dance, your pokemon outspeeds everything that it won't switch out of if it has 197 speed EVs, then running 252+Jolly seems silly. Put those extra EVs into HP and maybe get 3HKOd by something that would 2HKO you.
Furthermore, if you're running a pokemon specifically to counter another pokemon that shits on your team (or a certain variety of pokemon, of which there are several in the tier) you can run calcs, and find out "Ok, for the common set of ____ I need this much HP/Defense to go from 3HKO to 4HKO, and anything above that is a waste"
Or
"I need this much attack to OHKO/2HKO this pokemon, and anything above that is a waste"
You can save yourself some EVs there.