The front wheels must be free to pivot on their steering swivels. The driven wheels, whether front or rear, must also be free to rotate with the drive shafts .
Big wheels and low profile tires make any vehicle look tough. For years, the aftermarket has provided wheels in the most gargantuan sizes possible, wrapping them in tires with sidewalls as thin as an o-ring. As beltlines rise, greenhouses shrink, and wheel arches become more pronounced, manufacturers are routinely shoeing their cars — even relatively sedate family sedans — with wheels 19 and even 20 inches in diameter. They look great, but their durability and expense is questionable, at best. Not long ago — well into the 2000s — most daily driver sedans came with something along the lines of a 205/60R15 tire (See this diagram to explain the numbers). Tires in these sizes typically offer a good compromise between road-holding and ride, providing a nice, fat contact patch with the road, yet allowing some flexibility in the sidewall to soak up pavement irregularities.

Founder Sam Pearce describes his design idea: “In 2007 my idea of a wheel with tangential suspension was born when I was sitting at Eindhoven airport waiting for a flight. I saw a mother pushing her child in a buggy. The front wheels hit a slight kerb and the child jolted forward because of the impact. I asked myself why a wheel couldn’t have suspension inside it, so it would soften an impact from any direction. I sketched the idea in my notebook, got on my flight, and didn’t think much more about it for a couple of years.”
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