Lifespan of a timing chain ?

I own a 2011 Tundra with 210,000 miles on it. I got it from the original owner. I recently read an article about a Tundra sold by the Houma, La. Toyota dealer that went 1M miles. The owner said he changed the timing chain twice in 1,000,000 miles, but did not say at what mile intervals. My question is....... How many original Tundra owners are out there who have not changed their timing chain in 300,000 or 400,000 or 500,000 miles?

 

288k on my 2007. Original chain, no rattle.

 

301k no issues. Don't plan to ever change it unless it makes noise for some reason, which I doubt will happen.

 

287k on my '08 and no issues

 

230k on my '08. It does rattle at idle when warm, but once above 1200 rpms no noise.

I honestly don't know if it's the timing chain or not. It's done this noise since 50k miles. I'm not changing a thing.

 

Thanks for your replies. Sounds like a chain should be good for 300K+. I am guessing the man whose Tundra went 1,000,000 miles must have changed it close to 400,000 and 800,000 miles. I am 72 and am at 210,000. I probably will never need to change my chain during the remaining years I will be driving. Thanks again !

 

Timing chain and guide lifespan is greatly influenced by oil quality, oil change interval, and oil viscosity. Having the good side of all three, and life should be extraordinary, barring a poor design (which is not the case with the V8). Having a least two on the good side and life should still be nice. Poor quality, long change intervals, and thinner weights will eat ‘em up.

 

There's a million-mile 5.7 on another forum with the original timing chain. The first million-mile Tundra has a 4.7 and timing belt, which was replaced a few times.

 

Yeah the first two "million mile" tundras that got all the publicity were 4.7s with timing belts.

There was another guy that did a million with a 5.7 a few years ago, but i dont recall him saying anything about timing chains. It was just the usual stuff like water pumps and belt tensioners.

 

The owner of the truck is a hot shot trucker driving among the oil fields in the south east. He actually had 2 Million mile Tundra’s the first was a 4.7L and the 2nd a 5.7L it has been reported the dealership had done all routine maintenance

 

I have a Gen 2 Sequoia with the 5.7. Just turned 391k miles. I was told by a Toyota tech that the timing chain has "no recommended service interval". Basically, he said the rest of the motor will wear out before the timing chain and it's components. IF and only IF you maintain good oil change intervals...