I haven't tried a set of Panaracer Col de la Vie tires on a Raleigh Sports but had a set in 650B on a mid 80's Raleigh mountain bike that had been converted to a Nexus 7 speed hub for a while. The bike came to me with a Col de la vie tire on the rear, and a CST tire up front that had seen better days. I bought a new front tire and left the rear tire alone. I got a ton of flats with those tires, I ended up buying some Kevlar strips for the inside of the tires which ruined the ride. At max pressure they still felt soft under my weight. I eventually added a set of thorn resistant tubes and ran them over inflated to gain back to help with rolling resistance. While I think they're a well made tire, I don't think their a good choice for a heavy rider. Michelin World Tour tires have been my favorite lately. I've not had a set of Schwalbe tires yet though.