Good wheels and good tires take the 65 miles quite well - if all else is o.k. with your car. The real concern in STOPPING ! And I somehow don't feel confortable driving my 85 year old flivver at a sustained 65 mile speed, even though it can comfortably do it. Besides my concentration of listening for any 'new' sound - I don't think I and my '28 Ford can respond well against the modern kamakazi's that are constantly juxiposing (sp?) in both speed and lanes - much like an Indy track race. So I drive in MY 'comfort zone' of 50 - 55 mph, with an occasional burst of 60 - 65 to pass a '58 Volkswagen. Again, it's really about the old flivver being able to STOP and safely wiggle between fast-moving obstacles. The 19" tires can handle it, but I can't.