Description
The Grand Prix 4000S II Tubular sits at the apex of Continental's tire pyramid. The research, the materials, the engineering- all applied to the development of this amazing tubular tire. If you have waited for the ride quality and handling of a tubular with the technical advancements of the Grand Prix 4000S II clincher, you have found it here. The sheer volume of technology applied is almost ludicrous.
We can start at the core. The casing is wrapped 4 times using tightly woven 240 tpi poly-cotton fabric. It offers a very firm but resilient ride, and is perfectly round. There are no seams, so it glues to the rim surface with ease; with no hops or inconsistencies. To directly protect the casing, Conti has placed a strip of Vectran Breaker which is essentially a protective belt made of super strong and extremely lightweight, pliant material. This multifilament thread weave has five times the tensile strength of steel, but is lighter and more flexible than comparable nylon thread. As a result, the protection level is extremely high, but at a miniscule weight penalty, and ride quality isn't compromised at all.
As for the tread, Continental's BlackChili compound ensures that the 4000S II Tubular has exceptionally low rolling resistance, yet offers phenomenal grip in wet or dry circumstances across the entire rubber surface. Along with proprietary synthetic and natural rubber compounds, the secret to the properties of BlackChili comes from special nanometric carbon soot particles, which are optimized in shape and surface properties for each tire it is used in. In the 4000S II, the focus was on grip and rolling resistance. Thanks to these polymers and carbon fillers, the BlackChili ends up offering some of the strongest and most durable tread rubber available while keeping rolling resistance minimized. The compound itself negates small punctures and tears that plague other racing tires. Conti expects you to see high mileage from this tire, and as with the clincher, tread wear indicators allow you to monitor your tire's lifespan.... Read More
Features
- Tubular version of the superb Grand Prix 4000S II clincher
- The best racing and training tubular we have ridden
- Perfectly round, seamless, woven 4 ply 240 tpi cotton/poly casing
- BlackChili tread compound offers amazing grip, low rolling resistance
- Vectran Breaker is a pliable but highly protective belt that defends against puncture
- Valve core is removable for simple extension or adding ammonia-free sealant
- Pressure range: 115-175 *should be ridden firm in most conditions (not soft or hard per rider weight) for optimal performance, grip, and cornering adherence
- Weight: 700x22 270 grams
- Handmade in Korbach, Germany
Please note: Tubular tires cannot be returned for exchange/credit if mounted and glued