Truck talk in Texas usually means the age-old Ford-Chevy debate, but homegrown Toyota's are increasingly becoming part of the conversation. And you know, if you have ever been to Texas, the pick-up is King.

Texas Truck Country, statistics show Ford's best-selling F-Series pickups are losing some of their market dominance to the fast-rising Toyota Tundra.

Nationally, the F-Series dropped nearly 3.6 percentage points to hold 30.7 percent of the market, according to J.D. Power and Associates. In Texas, the models lost 5.5 points to fall to 31.9 percent, Michigan-based R.L. Polk & Co. reported.

Meanwhile, the Tundra, in its first year since a major redesign, picked up nearly 3.5 points nationwide and 3.7 in Texas, according to the same sources.

Those numbers might not seem huge, but when you consider truck buyers are second only to luxury buyers in terms of loyalty, Ford's drop and Toyota's climb are significant, said Lonnie Miller, director of industry analysis at Polk.

"There's no doubt been a very aggressive push by Toyota," he said.