dale.jenkins

I have a LX 470 that is due for a 90,000 service. My questions are as follows: 1. Can the replacement of the timing belt be put off until 120,000 miles? 2. If the timimg belt breaks, what is the extent of damage that it will cause? 3. Is there any risk in allowing a certified Lexus technician replace the belt rather than the dealer? 4. If the vehicle is properly maintained, how many miles should I be able to get from this vehicle. Thanks for any insights.