Road tyre brand and model, width, your body weight and tyre pressure

[Jehosefat]

https://blog.silca.cc/part-4b-rolling-resistance-and-impedance

[Schnavel]

https://blog.silca.cc/part-4b-rolling-resistance-and-impedance

 

Interesting! Thanks for sharing

[Long Wheel Base]

https://blog.silca.cc/part-4b-rolling-resistance-and-impedance

That is way too higher grade for me.

[Jehosefat]

That is way too higher grade for me.

 

Basically higher pressures have lower rolling resistance up to a point beyond which resistance increases dramatically as pressure gets higher. The pressure that this point occurs at is largely dependent on how smooth the road surface is. Rougher road > the point occurs at a lower pressure, smoother road > the point occurs at a higher pressure.

 

Since the resistance increases far more dramatically above the sweet spot than it decreases below the sweet spot, the recommendation is to rather err on the side of lower pressures.

[lechatnoir]

GP5000 28c with Ryder sealant

84kg

front - 65psi, rear 70psi

[Frosty]

all this talk of rolling resistance of fatter lower pressure tyres, has there been any studies that look at the aerodynamic pros/cons of running fatter rubber ?

Link to these studies, please? Keen to read them.

Scroll up to the YouTube link I posted. Alex explains the factors involved, eg. Pressure, width, aerodynamics, and more.

 

Edit: Posts 45 and 46.

Edited February 13, 2020 by Frosty

[samuel america]

I prefer tubeless setup. Less punctures and it's faster. Conti's are the best.Anyone using Giant's gavia race 1 tubeless tyres?

[The Ouzo]

I prefer tubeless setup. Less punctures and it's faster. Conti's are the best.Anyone using Giant's gavia race 1 tubeless tyres?

I had the race 2 on my bike.

Can’t say I was overly impressed. In the 1700km I did with them I picked up a small cut in the rear that I could not get sealed no matter what I tried.

They did not give me much confidence in cornering and braking.

 

I’ve only done 55km on the replacement tyres but they already feel much better.

[Underachiever]

Training:

- Conti sport or something 25mm: 5.5-6.5 Bar (tube) 

 

Racing:

- Schwalbe Ultremo 23mm: 7.5-8 Bar depending on road surface (tube)

  or

- Conti tubbies 23mm: 8 Bar

 

75-78kg

[Pusher]

25mm Gatorskin

Front 5.5 Bar

Rear 6 Bar

[HdB]

That is way too higher grade for me.

Here is another interesting article on rolling resistance and impedance:

https://flocycling.com/blogs/blog/understanding-rolling-resistance-impedance-for-cyclists

[Pikey]

1- Panaracer gravelking 32c ( tubeless) 5.2 bar rear 5.0 bar front

 

2- schwalbe pro one 28c ( tubeless) 5.5 bar rear 4.8 bar front

 

3- Gravel bike - specialized sawtooth 42c ( tubeless) - 2.7 bar front 3.4 bar back

specialized trigger pro 38c- ( tubeless) 3.2 bar front 3.8 bar back

 

Only use stans race sealant....can not recommend it highly enough . Seems to last forever and sealed every cut for the last 12 months ,all but a side gash from glass on a new tyre.

 

79kg

Edited February 19, 2020 by Pikey