I am glad to hear it is not just my RV going down I-40. There were a few short sections of rough road from south Florida to Oklahoma, but I-40 was terrible. It did not look as bad as some of the other roads I drove 1400 miles on, but easily won the award for the worst. In general my RV was pleasant to drive except for that last 200 miles where it threatened to fall apart on every pavement strip. If I go East again to Fort Smith I might take the old two lane roads to avoid I-40...could not be worse, just slower and more miles. The extra gas required should be small compared to the damage to my RV on I-40.