well here are some reviews from roadbike review. the conti ultrasports averaged 2.5/5 stars there

review #1

Strengths: Look like tyres

Weaknesses: Punctures, Flats, Wear, Cornering

Bottom Line:
These tyres came with my new bike and as a noob I knew nothing about bikes and even less about tyres.

For the first five or so months I was either incredibly lucky or the wear on the tyre was not enough to let any debris through. Since then I have had a litany of punctures until last week when I managed to get 100 % failure rate.

I suppose as they came with the new bike you could argue they were reasonable value as they were free with the new bike. Or you could argue the bike was free with them in which case they are a total waste of time and money. They are destined for the bin probably by next monday.

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review #2

Strengths: Great for flat fixing practice. So much so I ran out of patches.

Weaknesses: Punctures, not easy to get on. I get less flats on my GP4000s which are thin race tyres.

Bottom Line:
Rubbish tyre prone to flats. The soft but thickish rubber captures glass/rubbish. During the ride feeds it into/through the casing resulting in a flat. Other thinner/harder compound tyres may get cut up by glass/rubbish but most glass gets ejected before it penetrates the casing.
Not that easy to get on/off. I was happy to see these tyres reach the end of their life. Made in Taiwan not up to Continental Germany usual high standards.

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review #3

Strengths: Looks sexy, smooth ride, fast, good breaking

Weaknesses: Flats,flats,flats,flats and really hard to install

Bottom Line:
I have gotten 4 flats in less then a month. Hard to install.

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review #4

Strengths: Well, they're inexpensive, so you won't go broke replacing them so often.

Weaknesses: Weak tires. I can't believe it's debris, I keep finding holes in the sidewall. Replaced tubes, even got a new set of these (like an idiot). One tire will not last 200 miles.

Bottom Line:
They work all right...
...until they blow 100 miles later.

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review #5

Strengths: inexpensive

Weaknesses: Many

Bottom Line:
I bought these as a basic training tire. They are terrible for flat protection. I have had a flat just about every other ride on these tires. Only one of those was caused by something that would have punctured most tires. The first flat I had was within the first 12 miles of riding them. Absolute garbage.