Timing belt

Under normal driving conditions, timing belt do not need to be replaced until around 120,000 miles. If you are providing your car with the required maintenance and drive like a "normal" person should, I think that you are o.k. Of course, there is no guarantee that the timing belt, or any other component of the vehicle, will last the estimated time.

I thought the 2014 Tundra's have timing CHAINS and not belts?? Is that true?

The 2014 Tundra has a chain and not a belt. Therefore you don’t need to change it.