Updated my Ron Cooper with a rear wheel change to match the front one. Both wheels are now Campy Nuovo Record low flange 36 hole hubs laced 3X with DT Swiss 15 gage SS spokes to Ambrosio Montreal Medaille D'Or tubular rims. The tires are Veloflex tubular with a 25mm Roubaix in the rear and a 23mm Carbon in the front. The rear wheel was spaced for 126mm dropouts and I had to cut the rear axle, respace and recenter to fit in the Cooper's 120mm spacing. The bike now weighs 20.6 pounds, minus the Zefal frame pump. The ride with this wheel and tire setup is fantastic.