The size and number of wheels: Most inline skates either come with three wheels per skate or four. ... “A larger wheel (110mm-125mm) will be faster and smoother over cracks in the pavement.

“A larger wheel (110mm-125mm) will be faster and smoother over cracks in the pavement. ... Jeuwith 3 Wheel Unisex Inline Skates $135.99 at Amazon. 4.3-star average from 601 reviews on Amazon.

Inline wheels, meanwhile, are designed to roll through the streets, unfettered. You can find these wheels on Amazon and a few video tutorials on replacing your wheels here and here.