when to change breaks, are ther break warning light
my Avalon has 38,000 miles , everything working fine, had oil change and dealer told me I need to change rear breaks usually front breaks go first, don't understand why rear breaks need repalcemet my question is are there warnning light that let me know I need to replace breaks? Also I was told to replace timing belt and per Avalon manual it suppose to last 90,000 miles. Am I being taken for a ride?