Subject: RE: conti GP 4sGP4000s get generally good reviews. Long wearing & fast rolling. Perhaps not the most supple or smooth riding tire in this price class (vs Vittoria Open Corsa, Michelin ProRace, etc), but any tire has trade-offs. Some (not all) on biking forums have reported GP4k's sidewalls can be susceptible to road hazards. http://www.roadbikereview.com/cat/wheels/tires-clincher/continental/grand-prix-4000s/prd_411202_2489crx.aspx FWIW- My fav all-round clincher is Vittoria Rubino Pro Slick, which is cheaper (street price anyway), (IMHO) more resistant to road hazard, & sl better riding- although sl slower rolling than GP4s. I generally get around 3-4k miles out of rear tire, then put new one on front & old front on rear. For events I use Michelin ProRace, which is sl faster/smoother but not as durable or long-lasting as RP's. These give me ~2-2500mi wear (rear tire). BTW- According to Continental (and testing by German Tour magazine- which uses Conti's testing gear), GP4000S is not their fastest race clincher. That would be their Attack/Force combo (F/R different tires), although those tires have much less treadwear/durability for training. Agree with others that I try to support LBS whenever I can, but USD$75ea seems like list price rather than discount. |