NASCAR held a 30-minute meeting with drivers before Sunday's Ally 400 at Nashville Superspeedway, and one of the topics was rain tires.

NASCAR brought the Goodyear rain tires to New Hampshire last weekend and asked all teams to use them for the remaining 82 laps after the two-hour, 15-minute rain break. Denny Hamlin gave Bob Pockrass of FOX Sports as NASCAR explained the rain tire protocol, saying, “There is always room for improvement.”

“All I can say is that they explained to us why they made the decisions they made and why they're trying to approach this slowly,” Hamlin said. “When you make a big mistake, which I think is a very big mistake, it sets you back and you're less hesitant to take those risks again. So I was happy with everything they explained and of course there's always room for improvement, but they're trying to use all the facts they have to make the right decision.

“I mentioned at the [Actions Detrimental] Podcast: I thought they did a pretty good job, other than allowing the cars to put fuel in. That was the only thing that was maybe questionable. I like where they are with that and we will certainly continue to get better as teams with it.”

Denny Hamlin: New Hampshire was “treacherous” on rain tires

Long before racing resumed, it looked like NASCAR would have a window of opportunity to get some laps in as light rain began to fall on the track. Instead, NASCAR led the field into pit road and red-flagged the race, anticipating even worse weather.

When racing resumed, it was “treacherous,” Hamlin said in his podcast this week.

“Because we still don't want to race in the rain,” Hamlin said. “Even though they're called rain tires, they're more like wet-condition tires, which isn't that sexy of a name. The wet weather – I'm telling you, it would be too dangerous to race on that track. Before we started the race, I mean, we had two cars spin out under caution before we even got going. I just think it was probably the right time when we got going. But I'm telling you, it was treacherous for five to six laps before the car got enough heat on the track to make dry spots.”