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andrewins

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Hi!

What do you think, what tires are faster on bad aspalt road: WTB nano 700х40 or Continental sport contact 700x28? I'm going to ride 120 km granfondo on Mongoose selous comp. The bike weight is 12 kg. My weight is 68 kg. Want to ride fast on this distance.

Also wanted to find out what tire pressure is better for each of those tires on not good asphalt road?
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david_ve

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i would say the 28 will be faster!

 

even with high air load in te 40mm once, the 40mm wil be slower.

i think if u want to use the slick tires more, go for a 30 or 32 mm

that will end up as the best of both worlds i guess

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Volsung

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Reply with quote  #3 
I'm 200 lbs and ride 28s around 80 psi. You're pretty tiny so you could probably get away with mid 60s, but I'd test it first to make sure those tires can handle it

For the nanos I'd probably do around 40/45ish on road.

If you really want to ride it faster, get some Conti GP4000s in 28. They're really around 30mm, weigh next to nothing, and can be picked up for around 40 a piece from the UK.
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chas

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Reply with quote  #4 
Quote:
Originally Posted by andrewins
Hi!

What do you think, what tires are faster on bad aspalt road: WTB nano 700х40 or Continental sport contact 700x28? I'm going to ride 120 km granfondo on Mongoose selous comp. The bike weight is 12 kg. My weight is 68 kg. Want to ride fast on this distance.

Also wanted to find out what tire pressure is better for each of those tires on not good asphalt road?


What did you decide?
Nano's are not particularly fast tires on hard roads
I have your conti's and they  are a fairly fast tire. Also, The GP4000 in 28 I have is one of the fastest tires made, and measures 31 on my 22ID rims (or about 29 on 19ID rims)

I ride 28s at 50-65 gravel, 60-80 asphalt
I ride 40s at 35-50 gravel, 45-55 asphalt
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andrewins

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Reply with quote  #5 
Quote:
Originally Posted by chas


What did you decide?
Nano's are not particularly fast tires on hard roads
I have your conti's and they  are a fairly fast tire. Also, The GP4000 in 28 I have is one of the fastest tires made, and measures 31 on my 22ID rims (or about 29 on 19ID rims)

I ride 28s at 50-65 gravel, 60-80 asphalt
I ride 40s at 35-50 gravel, 45-55 asphalt



Thank you very much for your reply!

I tried to install conti sport contact but the stock Alexrims DP-23 rims of my bike are just awful! I gave up this idea after 2 hours of trying, destroying tire levers and damaging my fingers [frown] The tire didn't want to be put on the rim. Then I spend another 2 hours trying to place wtb nano tires on the rim. Fortunately I did that. So it was a 120 km race on bad asphalt on wtb nano after sleepless night 😉 But it was a good lesson for me 😉

By the way, what is your weight and what is the weight of your bike?


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chas

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Reply with quote  #6 
I hear ya.  I have some bontrager rims that I just can't get Schwalbe tires on.  Some manufacturers make tubless rims oversized diameter, while some make tires undersized with super tight beads.  If you get the wrong combo, they just won't go on.  On the flip side, the wrong combo of too loose will blow off...

I'm 170-175, and my bike is about 17lbs.  That'll make a difference in tire pressure.
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