Hi, I have a 95 E-350 PSD, and have 225,000 miles still on original front end, 2nd set of brakes, original engine, trans, and rear. Have not experienced any abnormal tire wear on last three sets of tires since new. Allways used as passenger family van + towing of RV trailer. I have only had glowplug issues that everyone experiences. Use synthetic fluids in everything.