Does the 2011 Lexus GX 460 have a timing belt or chain?

The 2011 Lexus GX460'S4.6L V8 engine is driven by a timing chain. This comes with its advantages and disadvantages, and depending on who You ask, one may outweigh the other. However, at the end of the day, most automotive experts agree (albeit not by a huge margin) that timing chains are the superior equipment. That's due, in part, to the fact that timing chains are estimated to last between 250,000 and 300,000 miles -- likely longer than the lifetime of Your car. Timing belts, on the other hand, need to be changed every 60,000 to 100,000, though they're easier to access and cheaper to replace. Still, the lifetime of a chain is only an estimate, and if it happens to fail early (or become stretched), You may be looking at a repair upwards of $4,000, not including any engine damage the failure may have caused.