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Panaracer Pasela TG Aramid Bead 27"x1 1/4" Less than 32 mm

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Panaracer Pasela TG Aramid Bead 27"x1 1/4" Less than 32 mm

Old 01-10-11, 07:46 PM
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Panaracer Pasela TG Aramid Bead 27"x1 1/4" Less than 32 mm

I mounted a pair of 27x1 1/4" Aramid Bead (folding) Pasela TourGuards on Araya 27" x 1 1/4 rims approx 24 mm wide (outside to outside). The tires measured 28 mm when infalted to 80psig and 100psig. Here are 3 additional facts
Tires are marked 27x1 1/4 and 630 x 32 on sidewall
Box tires came in was maked same as sidewalls
Tires were bought at Nashbar on clearnace ($14 each) back in 2003 and only mounted in 2010.

Here is 2 observations
The actual tire width is approxiamately a 1 1/8" (28 mm) verssu a 1 1/4" (32 mm)
The rim appears wide enough and is stamped 27x1 1/4

Questions
1. Did Panaracer grossly undersize tires back in 2003.
2. Does Panaracer still undersize tires
3. It is possible they stamped a run of tires incorrectly, stamped as 32 mm but actually 28 mm.

The truth is out there somewhere
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Old 01-10-11, 08:27 PM
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Haven't we figured out a long time ago that stated tire widths are pretty unreliable?

jim
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Old 01-10-11, 08:31 PM
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I seem to remember a thread that hashed out the actual widths of Paselas once mounted. No idea what it's title was though. A quick search might find it. (but probably won't)



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Old 01-10-11, 08:50 PM
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IIRC, it has been stated in BF that most tires are rated wider than actual and that Paselas are more accurate than most. I measured a set of 28mm (1-1/8") Paselas a year ago and they came out pretty much dead on.
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Old 01-10-11, 09:01 PM
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Does it matter?
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Old 01-10-11, 09:23 PM
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I have the wire-bead version of the Pasela TGs in 27 x 1-1/4 and they measure an honest 32mm fully inflated (~80-90lbs). They are on 1-1/4" wide rims.
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Old 01-10-11, 10:09 PM
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Oh, the HORROR.

Panaracer - of all companies - is lying about 3 millimeters. The shame.

-Kurt
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Old 01-10-11, 10:14 PM
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Does that number represent the width of the tire, or the height of the tire above the bead seat?
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Old 01-10-11, 10:40 PM
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USA, if it's printed on the side of the tire it should be width.
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Old 01-10-11, 11:16 PM
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I've got Pasela's on my Bianchi Nyala and their legit and measure out correctly.
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Old 01-11-11, 06:54 AM
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like most others, i've experienced tire size discrepancy.

If the tire is thinner than advertised, you've lucked out, b/c at least it'll clear your frame/fenders. Just try the next size up when those wear out.

Running 28mm tires never hurt anybody on a road-going bicycle. Just keep em inflated

-rob
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Old 01-11-11, 07:13 AM
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Any time they try to sell you something described in millimeters or centimeters, you can be sure it's a trick.

If they stick with sensible, honest inches, then you can trust them.
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Old 01-11-11, 07:36 AM
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In my experience, Paselas run larger than other brands with the same size markings.
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Old 01-11-11, 07:38 AM
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Originally Posted by john hawrylak
3. It is possible they stamped a run of tires incorrectly, stamped as 32 mm but actually 28 mm.
Yes. I have a tire somewhere that has the size "622 x 28" molded into the side, and a silkscreened label that says "630 x 28" applied to the sidewall. Mistakes happen. As for the other possibilities you list, I wouldn't rule them out. As for the myriad possibilities you didn't list, I wouldn't rule them out either.
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Old 01-11-11, 07:51 AM
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Yep, been discussed many times here.

https://www.bikeforums.net/showthread...ran-narrow-but...

+1 The good news at least they are narrower than advertised. Wider than advertised could be a problem, depending on clearances.
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Old 01-11-11, 07:55 AM
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Originally Posted by mickey85
Does it matter?
Only if you care about silly things like ride quality.

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Old 01-11-11, 07:57 AM
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Originally Posted by cudak888
Oh, the HORROR.

Panaracer - of all companies - is lying about 3 millimeters. The shame.

-Kurt
To look at it another way, that's 10% smaller than the nominal size of the tire, and 21% less volume. If you're buying wider tires for better ride quality, yes, it matters.

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Old 01-11-11, 08:00 AM
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At least the old Paselas were only 10% under the nominal width. I had a pair of "700x32c" Continental Top Tourings that measured 26mm - narrower than my "700x25c" Michelin Axial Pros (which measured 27+). But then Conti's always been pretty "creative" with tire widths.

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Old 01-11-11, 08:07 AM
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Originally Posted by wrk101
Yep, been discussed many times here.

https://www.bikeforums.net/showthread...ran-narrow-but...
+1 This thread is silly. They're tires; not calipers. There are literally hundreds of rims available. Tires measure differently on different rims at different air pressures. There are too many variables at play to expect a printed tire size to measure exactly that on YOUR rim.
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Old 01-11-11, 08:07 AM
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Originally Posted by USAZorro
Does that number represent the width of the tire, or the height of the tire above the bead seat?
Neither, actually. They're supposed to get this number by flattening the tire out, measuring linear distance between the beads, and dividing by 2.5. Then you're supposed to assume that this will be width.
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Old 01-11-11, 08:37 AM
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Originally Posted by Grand Bois
In my experience, Paselas run larger than other brands with the same size markings.
Same here although I've only ever used new Paselas produced in the last 3 years.

regardless, if you're gonna expect accuracy down to the mm you'd better take the rim width into consideration. The same tire will measure at different widths depending on the rim width.
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Old 01-12-11, 05:53 PM
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Originally Posted by USAZorro
Does that number represent the width of the tire, or the height of the tire above the bead seat?
The 28 mm dimension is the width of the tire mounted on the rim. It is not the tire height.
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Old 01-12-11, 06:05 PM
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Thanks for Input

Thank you to everyone who contributed. I concluded the tires were most likely stamped incorrectly and are really 27x1 1/8. However, they do ride very nice.

I was concerned since I am buying new Pasela's for another bike with 27" wheels and wanted to be sure Panaracer is not overstating the width at the current time.
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Old 01-12-11, 06:08 PM
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Originally Posted by noglider
Neither, actually. They're supposed to get this number by flattening the tire out, measuring linear distance between the beads, and dividing by 2.5. Then you're supposed to assume that this will be width.
Well, if that ain't the most cockeyed thing I ever heard... And it still doesn't explain the variation in actual size of tires of the same nominal size from different mfrs.

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Old 01-12-11, 06:53 PM
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Originally Posted by bobbycorno
Only if you care about silly things like ride quality.

SP
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Having 32c and 28c Paselas (and other tires - they're my two primary sizes) on a variety of bikes, I can tell you that, give all things equal, if 3-4mm of tire difference makes THAT much of a difference to your butt, you must have princess and the pea syndrome. Especially if we're talking 80-100psi. I mean, really? Now, 32-38, I can see that. 23-32? sure. But 28-32? I certainly can't tell much of a difference.
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