26 replies to this topic Post Order

[Minion]

Fitter, on 10 November 2011 - 11:30 , said:

Ektually, tyre pressure is determined by a dynamic process called "sag" (also known as tyre drop), similar to the way you set sag in a MTB suspension. So the tyre manufacturer will have an optimal sag for each tyre they produce (typically 15%) and it is up to the user to attain that sag percentage. So rider weight is crucial as well as wheel loading (front/rear bias). There are ways of measuring wheel load to assist with getting the right tyre pressures, but front is always lower than rear.

Sheldon Brown had a rough table of pressures based on wheel loading and tyre width here:
http://www.sheldonbrown.com/tires.html


His recommendation for a 77kg rider on an 8kg bike with a roughly 40:60 weight distribution is 100psi in front, 120psi at the back.

[Dubber88]

Edman, on 10 November 2011 - 11:56 , said:

Sheldon Brown had a rough table of pressures based on wheel loading and tyre width here:
http://www.sheldonbrown.com/tires.html


His recommendation for a 77kg rider on an 8kg bike with a roughly 40:60 weight distribution is 100psi in front, 120psi at the back.

Thanks Ed and Fitter,

Now that was the kind of answer I was hoping for.

I will definitely use that recommendations as a starting point next time I go and ride.

[gummibear]

Edman, on 10 November 2011 - 11:56 , said:

Sheldon Brown had a rough table of pressures based on wheel loading and tyre width here:
http://www.sheldonbrown.com/tires.html


His recommendation for a 77kg rider on an 8kg bike with a roughly 40:60 weight distribution is 100psi in front, 120psi at the back.

Thanks,some interesting things there.

[Garfield2010]

What are the best tyres as well as tyre pressure to not get punctures for a guy weighting around 85kg's?

Budget is around R1,200 for both tyres.............

Thx

[The Drongo]

Ping !

ModMerge.

[TNT1]

Road or mtb?

[Garfield2010]

Sorry road!!

[The Drongo]

TNT1, on 28 November 2011 - 10:04 , said:

Road or mtb?

That, IS NOT, what I meant.

[BlooHubs]

Tire pressure and the width of the tire is linked to each other..

Tire profile and pressure is linked to each other

same as car tiyeerrrs the lower the profile...the harder you gotooo pomp it...
nothing to do with the width.. its about using the air as a spring

[Tri-coach]

Just ump 100psi

[Tri-coach]

Pump