Tires require changing after a number of kilometres covered and will be specified by the tire manufacturer. Findout from your tire dealer.
Toyota recommends every 5,000 miles but you could do it sooner if desired
One can can often purchase a 2000 model Toyota Tundra at used car dealers such as Carmax, Auto Trader and Edmunds. They may also be bought at Drive Time, Cars For Sale and Car Gurus.
Every 90K miles.
Timing chain usually needs to be replaced each 180-200K miles.
You must replace the belt every 90,000 miles. Warning:This is an interference engine.
When the computer throws the code that you need to change the sensor.
It should last the life of the engine and is normally replaced during an engine overhaul.
yes
No actual life expectancy, when it needs replaced, replace it.
Often it is, but tundra can also be found on high mountains above the tree line.
a couple times a year
I think you mean tundra, which is the landform found in the arctic. The tundra often blooms in the brief summer.