Yeah, I almost always use the drift motor, it's alot more fun to play with, but not so much fun to test the top speed of
I am using the stock tires to test it. They were balooning up and every once in a while they'd fall off when I was testing it earlier, but I stuck them to the rims with some Seal-All earlier and now they stick alot better. Handling is better on our slick kitchen floor (doesn't hop around during turns, just slides and is easliy drifted) and outside it's better just because the wheels don't fall off all the time anymore. Dyno times are pretty much the same, though. Gluing the tires is definately recommended though