I brought my 2002 rx300 with 116250 miles in for brake and wheel shaking. Needed new tires and fourth set of front brakes with new rotors (shouldn't brakes last longer?). Got varying prices for brakes and was told ceramics are recommended, except by dealer. They also want to do a preventive timing belt replacement which I realize it is probably a good idea. Question is what should be done with this. I asked other mechanics for pricing and they gave me varying prices with varying things included (because labor is biggest part of drive belt replacement and might as well add other things to avoid labor later). These items included replacement of drive belts, front main engine seals, water pump, pulley tensioners, coolant. I do not plan to keep the car much longer, however, what should I replace to be preventive and avoid additional cost for labor down the road?