Class C Gulf Stream 28 ft, V-10, with 70,000 miles. Trips were mostly 400 to 600 miles at a time. To date the rear inside tires have been replaced, no brake replacement (realize this will be required) I acknowledge this has many variables but if the required maintenace was performed is there a mileage mark where one would expect engine/transmissions/rear ends, etc need to be rebuilt. I can purchase for $15,000, slightly below NADA book, overall it seems clean. Thanks for any info given.