E 550 The perfect blend of stability and comfort for long rides. Want to make the challenge of a long ride more achievable? Upgrade your bike with the aerodynamically optimised E 550 rim. The ultimate rim for long-distance rides, it offers the stability and comfort you need to ride further with confidence. The 22 mm internal rim width is optimised for 28 mm-wide tyres, giving you enhanced comfort and lower rolling resistance when inflated to lower pressures. With the E 550, you’ll have no more excuses not to extend your ride.