80 psi what a difference it has made to enjoyment of bike.

edhornby

FWIW I have

old steel framed fixed gear with 23mm gatorskins and I run them at 7bar

alu framed road (summer) bike with 23mm lithions and I run them at 7 bar also

I find that 6.5 bar or less it feels draggy and 8bar or more I lose grip

bompington

I run mine at around 61,000 torr. I could of course pump them up to a unit that everyone understands but where's the fun in that?

Peddle Up!

I'm an inches of Mercury man myself.

pastey_boy

im 17 stones and run 110psi in 25 conti 4000's on a titanium bike. feels great. when running 23 tyres i run 100 psi but the 25's feel faster yet comfier.

tc345

I run 120 f+r.

However this is on a more comfy CF frame that soaks the bumps noticeably better than my old alu frame/ CF fork combo (which i used to run at 90-100). When i first got the CF frame i thought that the tires were soft as it was so good at soaking the bumps. This isn't true for all CF frames tho, some can be stiff as hell and v uncomfortable, or so i have heard.

tonyrockyhorror

bompington wrote:

I run mine at around 61,000 torr. I could have course pump them up to a unit that everyone understands but where's the fun in that?

You definitely will feel the benefit if you let a little air out from that :-)

I'm currently running at about 7Kg/cm^2 myself, but will try reducing to about 1100mmH2O to see how I get on

bompington

tonyrockyhorror wrote:

bompington wrote:

I run mine at around 61,000 torr. I could have course pump them up to a unit that everyone understands but where's the fun in that?

You definitely will feel the benefit if you let a little air out from that :-)

I'm currently running at about 7Kg/cm^2 myself, but will try reducing to about 1100mmH2O to see how I get on

Oops. I should have checked my calculations before re-marking the gauge on my pump, the extra zero certainly caused some problems coming home last night, no wonder it felt so bumpy
To stop the problem recurring, I'll pump them up to 9500 fully loaded 747s per square furlong tonight.

big_southern_jesse

I have just got onto a road bike for the first time...


finally got a decent pump and got the pressures for gatorskins 23s up to about 110, according to the pump gauge. Maybe because I am 90+kgs, but the whole thing felt really wobbly and twitchy with a lot of roll in the corners at lower pressures...

So as ever, down to what you like...

Peddle Up!

Interesting experience. I've just done a 20 miler on 80 psi front and rear. Observations:

Speed around the same, and certainly not slower.

Less road buzz, particularly on rough tarmac.

Bike feels more planted esp. at the front.

Possible better resistance to sidewinds.

vorsprung

Both Michelin and Schwalbe do not recommend pressures below 6 bar for their 23mm road tyres (Pro4 and Ultremo)

6 bar is 87 psi

So 80 psi is a bit on the low side

If you want to go lower than 6 bar then a wider tyre is a good idea

gmacz

That was the problem with my tyres, min was 100psi.
When looking at mtb with min at 40psi, I always set at 30psi.
Mainly for comfort as it has an old Judy xc fork.
Just thought I would do the same with roadie and it is now a very nice bike to ride.
After a certain age, comfort is needed, solid tyres are too painfull.
Jejames have still not sorted prob with mudguard, cs not a strong point.
Glad bike was purchased elsewhere.