>>1997333Ultra sports are surprisingly decent tires for budget tier street tires. They have a lot of grip and nylon is a highly elastic fiber making them surprisingly comfortable at the expense of a heavy and slow rolling tire. They can also handle a decent amount of mileage before needing replacement because of their high mileage silica based compound, PureGrip. Continental also makes a tire with the same compound and design but with a nylon puncture protection strip at the cost of some performance, that tire is the Grand Sport Race. One more market segment up, there's the GrandPrix All Rounder which has a similar design philosophy but uses Black Chili instead of Pure Grip and an polyester puncture protection strip instead of nylon. The GP All Rounder has a lower 3/180 TPI than the GP 5k and the 5k uses an aramid puncture protection strip, which is lighter and faster but much stiffer and less comfortable.
