What psi should I use in my 700x25 tires?

[Sandy]

I bought some Michelin 700x25 Pro2 race tires ( I was also going to try some GP4000 700x25 tires, but the supplier didn't have them at the time). I am using 120 psi rear, and 115 front, presently, in my 700x23 tires. I weigh 225. What psi would you suggest for my 700x25 tires?

THANKS for any suggestions.



Michelin Man

[SoCalSteve]

and I weigh a tad more than you. I never run them more than 110 rear and 100 to 105 front. I have never had a pinch flat running at those pressures and I think you will like how plush they are...

Or, maybe try 100 both front and rear and see how you do. I am sure road conditions where you are will play a big part in determining what the final psi will be.

Good luck (they are great tires!),

Steve

[David Kirk]

I'd experiment.........it's not like you can get it "WRONG".

Try 90F and 100R.........see what that feels like and go from there.

Dave

[Kevan]

just too much material to work with here.

[palincss]

and I weigh a tad more than you. I never run them more than 110 rear and 100 to 105 front. I have never had a pinch flat running at those pressures and I think you will like how plush they are...

Or, maybe try 100 both front and rear and see how you do. I am sure road conditions where you are will play a big part in determining what the final psi will be.

Good luck (they are great tires!),

Steve

I weigh 100kg and I've run Axial Carbon 700x25s at 100 front 105 rear for the past 1500 miles with no pinch flats. Of course, I also take care to ride light, don't slam over RR tracks, and save the really bad roads for my 650B bike.

:cool:

[Smiley]

Sandy all good advice but what if your NOT AT SEA LEVEL then how much air pressure do you need . Are you not a math professor :)

[Sandy]

Sandy all good advice but what if your NOT AT SEA LEVEL then how much air pressure do you need . Are you not a math professor :)

It all depends. If I am below sea level because I sunk, then it really doesn't make much difference. If I am above sea level, because I am on my Supersonic Speedy Serotta Sandy Spaceship, then it still doesn't matter since my bike won't fit. If I am anywhere in between those two extremes, it still doesn't matter, because I am:

Snail Slow Serotta Sandy :)

[Sandy]

just too much material to work with here.

Yep. You are correct. Mostly brain material! :)


Super Smart Serotta Sandy

[Too Tall]

Before or apres' tuna sammy?

[dave thompson]

Sandy, I'm right arount 200# and rund 95~100psi in my 25's.

[alancw3]

sandy i am about 220 and have found 90f/100r to work great. nice ridability and no pinched flats. i ride pretty much on a daily basis and find that i only have to fill my tires about every three to four days. might loose a few lbs. by then.

[vaxn8r]

Sandy, I 'm almost positive those have a max psi rating of 95. That's what we use on our tandem...about 360lbs with bike. 95psi is fine.

[News Man]

I am 195 and use 25s on my Kirk. I go 85 and 90 and it's a plush ride, no trouble thus far with pinch flats.

[Sandy]

Thanks everyone. The info should help a lot.


Speedy Sandy

[The Spider]

102 max psi. (which is a 13 psi drop from the 23mm)

I've run mine around 95 tol 100. lovely tires. 25's are good things, bloody fast too!

[zap]

Sandy, as of last week, REI in Rockville had 2 GP4000 in 25.

The only time I have anything bigger than a 23 is when I put slicks on the MTB. Then I put 100psi in there. Still feels like mush when hammering out of the saddle.



Sandy, I 'm almost positive those have a max psi rating of 95. That's what we use on our tandem...about 360lbs with bike. 95psi is fine.


WOOOOOOOOW

I've been thinking about getting these tires for our tandem. When I do get them, we'll give 95psi a try. This I have to see and feel. Our combo weighs 345 lbs.

[Ahneida Ride]

Sandy

I run 110 rear on the 25 Axial pro.

Front is 23, Run 120 there.