Why do aircraft tires have straight treads?

I believe the question is asking why don't aircraft tire treads look more like these: Photo credit: Summer Tires vs. read more

Aircraft tires are typically inflated to around 200 PSI which will aid in increasing the speed at which total hydroplaning occurs which is a function of water depth, runway surface roughness, aircraft speed, and of course tread design, so pilots will exercise extra caution when landing under crosswind conditions on an extremely wet runway, and will tend to observe minimum touchdown speed, early runway contact, and use brakes, spoilers, and reverse thrust to quickly get below hydroplaning speed. read more

In the old pre-jet days it was more common for aircraft tires to have treads that looked more like car tires. Example retrieved from the wreckage of the Air India L-749A Constellation that struck Mont Blanc in the French Alps on descent into GVA in 1950 killing all 48 aboard. read more

The nose tires on some aircraft are built with “chines” molded into the rubber sidewalls of the tires to deflect water spray from puddles on the runway. This deflection is intended to prevent large sheets of water from being sprayed into the engine inlet. read more