Is there a reliable way of telling if a Lexus car had its odometer number changed?
 

Besides looking at maintenance records and the brake/gas pedal wear, what are some of the ways you can tell if the odometer has changed?

Yes, Carfax (if a report is available) is one of the best ways...though not foolproof. Other generally reliable ways are to look for wear and tear on the seat upholstery, rust spots on the car from age, accumulation of a lot of dirt and gunk on the engine and underhood (though some engines are cleaned to try and hide it), and cracks in rubber parts that come from age and/or exposure to the air. Wiper blades, though, are a standard maintenance/replacment item, and usually not necessarily a sign of a car's age....but, in general, the glass itself (if not replaced) is. Older glass will tend to collect very fine, almost invisible arc-shaped scratches/abrasion-marks, and sometimes small pits from stone/gravel-impacts. Also, if known, compare the driving habits of the person who previously owned the car to what the odometer should (about ) read under those circumstances. A traveling-salesperson, for instance, or someone who commutes many miles each day is not going to have a low-mileage cream-puff.

What is the issue? Car you are looking at or own?

Hard to tell, rust, dirt, wear can have just as much to do with where it is owned/driven, how it is taken care of, lack of cleaning, abuse as someone rolling back mileage. You really can't tell unless the wear and tear is just so blatantly obvious and severe for a car with really low miles.

I would do carfax, look up VIN number, go on Lexus site if it is a Lexus which will tell mileage of services at Lexus dealerships.