Grigg I hate to disagree with you, but you're wrong.
I drove 12 round trips from Santa Fe to Denver last year in my truck, and that was 800 miles a round trip. Every single one of those trips averaged between 65 and 70 mph.
So I think the 235 is a LOT more durable than you give it credit for. Either that or else your 235 is not very well built.