eli

I need tips on replacement tires for a older Peugeot with 27 x 1 1/4 inch wheels. The bike is to be used as a daily commuter and the commute is over roads that on the 1-10 scale for quality of surface, 10 being best, rate a 4-5, maybe 6. The rims are steel with 36 spokes and original and what rubber is on there now is dry-rotted.

I'm starting out about 300 plus pounds and will carry about 35 pounds in textbooks, etc back and forth to school.

I'd rather buy 1 quality tire, tube, liner, than 2 or three cheap tires that just will not get the job done.

All feedback is welcomed

Cheers,
Eli

rokphotography

search there are multiple clydes topics on wheel and or tire preference. high psi is a must with us tho

Tom Stormcrowe

Continental Ultrasport (70-100 PSI inflation range), and run around 90-100 PSI. If you want Kevlar, you can either get the Ultrasport Kevlar or a kevlar tire liner. I run the Ultrasport and don't even bother with the liner. In a pinch, you can get the Bell 27X11\4 @ Walmart and run 90 PSI for an easily available, relatively inexpensive backup. If you want thew Gumwall look, IRC makes a decent 27" tire as well. Run 90 PSI in it as well. You should be advised though, if you have straight walled steel wheels, you need to keep the pressure down around 75-80 PSI and 90 max. 90+ and above PSI's need to be a hookwall alloy rim.

The 1 1/4 wide tire is 32 MM wide, so you have some wiggle room on the necessary pressure. That's one of the reasons I prefer the 32MM wide tire.

Hambone

Love my Conti's!!! (Grand Prix 4000 on my ride now but...)

eli

Thanks, I had looked at some Continentals and thought they seemed like a good place to start; Continentals have a good reputation, at least on autos, as I remember.

Can I hear more about high psi and tire selection. All of this is still very new and interesting.

Cheers,
Eli

philipw

I've run 27 1/4" Continentals on my 25" fixie for six years or so. I like them a lot. The ones I have are 28mm wide; I'd second the recommendation for 32s, though.

Steel rims are often associated with galvanized spokes, which have never held up for me. If you start breaking spokes in the rear, don't waste too much money/energy/time having them replaced. See what you LBS has in the way of a cheap wheel with stainless spokes and an aluminum rim. Then go break that one instead! :^)

Philip

Tom Stormcrowe

Phillip, a 27X1 1/4 is 32 MM wide,. It's measured metric as 32-630. That's 32MM width and 630 mm bead wire circumference. If you have a 28MM width, you have a 27X1 1/8 tire.
Here are some tire-info links:
https://www.sheldonbrown.com/tire-sizing.html

https://www.sheldonbrown.com/tires.html

Hambone

all too often it seems the answer is, Sheldon Brown has a great article. But "Sheldon Brown has a great article."

https://www.sheldonbrown.com/tire-sizing.html

philipw

Tom,

You're right, the tire says 32-630 on the side (Continental Sport 1000s), but it only measures 28mm. The "35mm" Paselas on my other bike measures 32mm. Newer Paselas are (allegedly) correctly marked; perhaps newer Continentals are as well?

Philip ("lies, damn lies, and sidewall markings")

Tom Stormcrowe

Under weight, the width spreads the additional 3-4 MM, as I understand it. You might also look through Sheldon's article on how tires are shrunken from their marked size to save mass.

Hambone

From a marketting sense it makes perfect sense -- but that is really not cool.

superslomo

Conti also makes the Ultra Gatorskins in a 27"x1.25" size. They have the kevlar liner to protect against punctures. I have them on my (occasional) commuter/beater, and they seem solid. Pretty happy with the 700x28s on my roadie as well.

They are a bit stiffer than some others, from what I've heard, but are pretty solid and take really high psi.

The best deal I had found was at www.biketiresdirect.com

eli

Thanks Superslomo and friends. I do think the Conti Ultra Gatorskins are the way I'll go on this first set-up.

Eli