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27 inch (ISO 630 mm) Bicycle Tires from Harris Cyclery

This is the size used on most older 10- and 12-speed road bikes made for the U.S. or British market including:

Dawes; Jeunet; Mercier 100; Peugeot UO-8,UE-8; Raleigh Grand Prix, Record, Super Course; Schwinn Varsity, Continental, Super Sport; Univega; Vista and many others.

27" Tire/Rim CompatibilityOther Tire SizesGeneral Article on TiresTire Sizing Systems Explained

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Panaracer Pasela

Pasela

Japanese quality, high performance tires with classic look. Very comfortable ride. Wire bead
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Available Widths:
27 x 1"
27 x 1-1/8"
27 x 1-1/4"

Color Options: Black with Tan sidewall.




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Panaracer Pasela Protite

Pasele Protite

Japanese quality, high performance tires with classic look. Very comfortable ride. With puncture-resist belt. Wire bead
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Available Widths:
27 x 1"
27 x 1-1/8"
27 x 1-1/4"

Color Options: Black with Tan sidewall.




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Schwalbe Marathon Greenguard

Schwalbe Marathon

Highly-regarded touring/rough stuff/city tire. Features Greenguard® belt for puncture resistance. Wire bead
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Available Widths:
27 x 1-1/4"

Color Options: Black with reflective stripe.




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Note on tire/rim compatibility:

Traditional 630 mm (27 inch) rims were straight side design, but in the late '70s they evolved to a "hook edge" design which would permit the use of higher pressures.

These days, many 630 mm (27 inch) tires are marked "For hook edge rims only" (some companies use the term "crochet type" instead of "hook edge"...this is the result of poor translation.)

The fact is that modern 630 mm (27 inch) tires will work on older straight-side rims, but they won't handle as much pressure as they are capable of with hook edge rims.

Generally, the "rule of thumb" for traditional 630 mm (27 inch) tires is that they should be inflated to 70-75 psi. This shouldn't be a problem with any tire, despite whatever disclaimer the manufacturer puts on the sidewall. However, if you're restricted to this pressure range, you probably shouldn't be running tires narrower than 1 1/8, or preferably 1 1/4, unless you're a very lightweight rider.

Click here for 630 mm/27 inch rims!

Click here for 630 mm/27 inch wheels!

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