Alot to be said for frumpy 65 and 70 series tires in the "real" world!
I know what you mean. Even little economy cars today come with 16" and 17" tires that are very expensive when replacement is needed. What ever happened to 155/13's, 165/13's etc...
Only 10"??? Here we have problems when the snow that fills the potholes melts and then you get the full force of that tire disappearing and re-appearing at 40mph...
Take it in and have the alignment checked. Here I usually buy a 3 year alignment "package" for a discounted price and tak it in every 6 months. Once I hit a pothole here that took the right the front wheel off. It rolled a whole block down the street and into a Shell station and knocked a guy over who was pumping gas into his minivan. He was covered in gas & road dirt and was so mad he called the police. Two cops showed up because they thought I knocked him down physically. When they saw my car sitting 1000 feet down the street with no wheel and the guy all covered with dirt & gasoline they both started laughing so hard they could hardly write me a ticket. The guy got so mad he jumped in his car and sped out of there. So the cops let me go.
Ten inches is as tall as the curb, and hitting a curb at even 15mph will cause damage. Something has to give -- either your front wheels/tires, suspension, whatever. ..Unless you were going extremely slow..