The only clue I have here is the name "golfappeal." Perhaps you play it, perhaps you drive one.
Tire pressure is commonly set too high at dealer visits. The greenest mechanics usually get car wash and tire pressure duty. It has happened to me several times. Set it to the pressure shown on the door jamb / in the manual, not the number on the tire's sidewall. Buy your own digital gauge. Pencil gauges are inaccurate and the ones on the end of gas station hoses get knocked about quite a lot.
And if you really do have a Golf, you are more likely to have low-profile tires on big diameter rims. These bring a lot of the road texture inside, especially if they are not factory-tuned original equipment. Same for run-flat tires. They have very stiff sidewalls.
Bad struts would feel "sproingy," more than they would feel hard--unless it is bottoming out. I guess one strut could be bent, and sticking, but you'd feel an imbalanced orbital motion.
You seem to be describing high tire pressure and/or high performance low prifile tires.
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