25c tyres, what PSI do you run?

110/100 wet/dry front, 115 rear for me.

100, bit less, bit more depending on conditions 90-105

85/90

110 front and rear on a 23c.

http://www.michelinbicycletire.com/michelinbicycle/index.cfm?event=airpressure.view

80-100 depending on conditions and when I last pumped them up.

About 100

90 front 100 rear and I am heavy.

There is a lot of BS myths about road tyres and pressures, usually based on what works on the track.

110 both on GP4’s.

Surely you inflate them to what they say on the Tyre?

Or Am I being Gallactically Blonde?

85 front 95 rear on 25c tyres. I weigh 150lbs.

Surely you inflate them to what they say on the Tyre?

Or Am I being Gallactically Blonde?

Depends on your weight dosnt it.

I usually run about 100psi for the roads around here, but on lovely smooth roads ill go higher.

Proper lazy pump them up to about 100 but only do it now and then.
They get down to 60-70 Normaly and does not seem to notice.

Just try a few and see what happens

That’s a good link for the Michelins, cheers… I’m using Optimums at 100psi so I guess I should try dropping it a bit.

135psi in my ultremos

I’m sure this was asked at the Pro Tour City centre jobbies. They said about 100/110 or 90 in the wet.

120 in my tubs,100 in the clinchers and 90 on the training bike.

The 15% rule is where it’s at.

cynic-al – Member
The 15% rule is where it’s at.

eh?

I just pump them up until my knackered track pump starts leaking air from the seals.

I just pump them up until my knackered track pump starts leaking air from the seals

Same here; are the folk who run different pressures front/rear and wet/dry trolling?

Generally 95-100psi front & rear

are the folk who run different pressures front/rear and wet/dry trolling?

No. Better grip and comfort compromise.

until they are hard 150 for time trials 120 ish for other stuff

There’s no point in worrying about pressures if you’re using cheap tyres. Get something good like Michelin Pro 3s and then experiment with pressures.

So moving on to mtb’s then shall we….
29er front 40 f, 55 r (rigid ss)
Lefty, 55+55 (alli ht)

Kryton57 – Member
eh?

http://www.bikequarterly.com/images/TireDrop.pdf

Actually I’d not read that in detail, but I do tend to run quiet low pressures like it says to.

But then I’m not worried about speed really.

120 ish on the road bike
35 ish on the MTB

But I am heavy, 95kg or thereabout.

110/120 f&r although i have no idea how accurate my track pump is.

60 psi must feel very sluggish.

I’d pinch flat all the time on 60psi.

About a 100 in each tyre for me. Puncture resistance being the main reason.

Similarly MTB tyres go up to about 45-50. A puncture will slow me down a lot more than just losing a little bit of grip.

115psi front and rear in 23C Specialized Mondo Pros