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How big are your road tires, how big can you go?

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How big are your road tires, how big can you go?

Old 10-04-11, 12:25 PM
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treebound 
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How big are your road tires, how big can you go?

Just curious what size tires some of you run. I just picked up some Bontrager Race Hardcase All Weather tires in 700x32 and am going to find out if they fit my late 80's LeTour. Color on these is a bit bright though, but the price was right.

Color-wise they might just work out: (if they fit)



Hope they fit. The celeste-ish colored Michelins will be coming off, those are 700x25's.

https://www.bikeforums.net/showthread...ghlight=letour
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Old 10-04-11, 12:43 PM
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I actually ran those same tires on my Atala for a while. They're basically impervious to everything, but are also quite heavy.

Make sure to run them on a wide rim for improved high-speed handling. I had them on some 19mm rims and they were blubbery.

I've since upgraded to the "27mm" Challenge Parigi-Roubaix tires, which are actually the same size but much comfier and faster. (...and more expensive, easier to puncture, shorter-wearing... everything's a trade-off)
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Old 10-04-11, 12:58 PM
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I had a 38mm Bontrager tire on my '84 Specialized Sequoia and it was a tight fit at the chainstays. The tire had just a tiny wobble at one spot so I had to deliberately untrue the rim so the tire wouldn't hit the stay at that point.
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Old 10-04-11, 01:00 PM
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https://www.trfindley.com/flschwinn_1...9_Ltwt_16.html

Per the trfindley catalog scans it looks like the LeTour has 700x20c rims so hopefully they'll lay out okay. I'd like to avoid a blubbery ride, doesn't sound fun.
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Old 10-04-11, 01:01 PM
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30's on a GS Comp., too wide for my taste, wearing them out to be replaced with 28's
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Old 10-04-11, 01:16 PM
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There's road, C&V road, and gravel roads.

I wanted to experiment, so I put 35mm Marathon XRs 700c wheels on my Hetchins built for 27". They've been great for the dirt paths and rougher roads. I've held back, simply 'cause I can't bring myself to trash the finish on the Hetchins. It'll happen in due course, so I'll probably get more serious use out of those tires then. I rode 25mm tires on it today.


These are the 35mm XRs.
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Old 10-04-11, 01:43 PM
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I have 700x35c knobbies on this bike, they BARELY clear the chainstays but besides that there's plenty of room

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Old 10-04-11, 02:38 PM
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700x32 Panaracers on my '79 Super Grand Prix and there's not much room left over.
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Old 10-04-11, 02:51 PM
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I too run the 700x32 Pasela's, on my Trek. They fit on my Comp GS, but just barely, I run 28's on that. I've been wanting to pick up a set of the Panaracer Ruffy Tuffy's for a while. Generally, I like the fattest tire I can reasonably fit.

As for 27" wheels, I usually just run the 1 1/4" Cheng Shins (usually flippers).
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Old 10-04-11, 02:58 PM
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I'm running a set of Conti Gatorskin 700x28s on my '73 RRA. Not noticeably slower than my other set of wheels (with Vittoria Corsa Extra 700x23s). I'm guessing I could probably get 32s on here, but not thru the brake QRs. The 28s do go thru the QRs just fine.
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Old 10-04-11, 02:59 PM
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Running 35 Schwalbies on the Winsor.If the fork wasn't bent it could go bigger.

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Old 10-04-11, 03:05 PM
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I run 700x28mm Panaracer Pasela Tourguards on my daily rider / commuter Kilo OS. When I bought the bike it had 38mm Kenda tires on there, so I have a lot of room to spare. I found them too fat and heavy for my riding style. My JRJ, which has not yet been ridden, is wearing some new Paselas in 27"x1-1/8" size.
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Old 10-04-11, 03:06 PM
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Running 700x30 Kenda Kwicks on my '91 Bianchi Eros. They measure about 28mm wide on the 14mm rims, and one could not get larger tires on this thing without modification. I had to clearance the front fork a little and use a different bolt on the FD to shift into the big gear.

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Old 10-04-11, 03:09 PM
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I ride a Trek 420 (commuting) here at school and I have 38's, I believe. Perfect fit. I was doubtful they would fit but I just went for it.

This is probably more believable with pictures so I may add some later, no rub except a tiny bit on a reflector bracket on the brake bridge, which I plan on bending a little bit to get out of the way.

All my other bikes get the skinny tires though.
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Old 10-04-11, 03:14 PM
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I can't run bigger than 25's on anything I have. In fact, I just gave cehowardGS a set of UltraSport 25's.
That's just the way it is here. I do like a nice-rolling 25 from time to time, I just don't like looking down at them over the bars.

Originally Posted by treebound View Post
Just curious what size tires some of you run. I just picked up some Bontrager Race Hardcase All Weather tires in 700x32 and am going to find out if they fit my late 80's LeTour. Color on these is a bit bright though, but the price was right.

Color-wise they might just work out: (if they fit)

Hope they fit. The celeste-ish colored Michelins will be coming off, those are 700x25's.

https://www.bikeforums.net/showthread...ghlight=letour
Those are pretty bright colors for Wisconsin.

Originally Posted by prathmann View Post
I had a 38mm Bontrager tire on my '84 Specialized Sequoia and it was a tight fit at the chainstays. The tire had just a tiny wobble at one spot so I had to deliberately untrue the rim so the tire wouldn't hit the stay at that point.
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Old 10-04-11, 03:50 PM
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Well, I run Bontrager Race Lite Hard-Case 32s on my Jamis Aurora which originally came with 28s. I could probably go with 38s if I desired, but the 32s really run nice on that bike and they are really flat proof tires for the most part. I also have those tires on a Trek 7.5 fx which were the original equipment (that bike can take 38s too. I can't fault those tires for much, maybe some weight but I have been running them for two years without issue so I can happily give them a recommendation.

25mm something or other on a recent Olmo Sprint purchase, I can't remember the name of the tires. The Olmo will probably take 28s, but I am going to stick with the 25s and maybe get a new set of wheels for it in the future; something a little bit lighter would be cool. Cool bike.

Also got myself a Lemonde Zurich frameset that will probably take 28s without issue, but I am going to go with 25s when I get around to purchasing a wheelset. Cool frame.

The Rivendell Sam Hillborne is sporting 650b 38mm Pari Motos which are excellent tires, can't find a fault yet..maybe price. I think that bike can take 42s too, maybe even wider. I think the combination of tire size, tire quality handlebar placement and the general geometry of that bike makes it the most comfortable that I have ever ridden. Not the fastest, but certainly the one I don't have a problem putting the miles on. I am kind of a wide tire kind of guy though, if I had to choose.
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Old 10-04-11, 04:29 PM
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One small detail regarding big tires that hasn't been mentioned: toe overlap.

I find that extra fat tires sometimes produce toe overlap on a bike that didn't have it before. I nearly put the bike posted above on the ground the first time I took it out with those nice fat tires.

YMMV, obviously.

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Old 10-04-11, 04:41 PM
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one thing about the bontrager hardcases since a lot of you are mentioning them.

i bomb down this huge hill every day, and i noticed one of my bikes was a little squirrely. i was using 700x32 bontrager hardcases. i switched them out for 700x32 paselas, and that fixed the problem. i them moved the hardcases to another bike, and it became squirrely. swapped the tires out for paselas and problem solved again.

i will say those tires last forever. i probably have 5000+ miles on them, and they look like new. if you drop the PSI they aren't too bad for comfort either.
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Old 10-04-11, 06:22 PM
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26mm Panaracer Stradius. That's max for the front. Many 28s could probably fit on the back, but I haven't tried.
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Old 10-04-11, 06:52 PM
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I just ordered some Kenda knobbies for my winter Peugeot UO-14, 27x1-3/8" (35mm). Looks like there's room for up to 45's. I'm expecting no problems with fit, even with 48mm fenders. Toe overlap is no problem because of the long front center. The tires were $7-ish at Niagara, btw.
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Old 10-04-11, 06:56 PM
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I put a set of 700x25 Michelin Pro Optimums on my '97 Bianchi Trofeo. If I were to run fenders on this bike, that's about as large as would fit. Strangely enough, my 2011 Allez frameset would probably work with 700x32s and fenders. I might try that this winter.
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Old 10-04-11, 06:59 PM
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Well, got one question answered, and came up with a plan for another, first the LeTour....

Got home, pulled the Schwinn out of the garage, pulled the current tire off the front rim, slipped on one of the new blue tires, went over to the bike, and, well, shoot, it don't fit. Hits both the brake arms and the fork bridge. I didn't even try it on the rear.

Here's some pics of the Schwinn, the color looked nice, too bad. Next post will be of my new plan for the tires.
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Old 10-04-11, 07:06 PM
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The new plan:
I've got the Motobecane Grand Jubile waiting it's turn to be worked on, so I pulled it out of the garage as well and slipped the Schwinn wheel with the new blue tire on it just to see how it fit. The Moto has/had 27" wheels, the LeTour has 700c wheels, and it looks like the 700c wheels with the new blue 700x32 tires will fit the Moto with room to spare. Alrighty then, looks like I'm now thinking of converting the Moto to 700c. The brake arms look like they might be able to just about work, or at least work close enough, but I'll figure that out whenever I get around to working on it. But for now I've got a potential use for the new tires so all is not lost.

I eyeballed the Univega Sportour while I was in the garage, that one has 700's on it now, but it might be slightly tight with the 32's. Maybe I'll try to test fit them another day, or not, color doesn't seem to go well with that bike. Oh well, such is the bicycle game. Live and learn, adapt and persevere.
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Old 10-04-11, 07:13 PM
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35mm Vittoria Hyper Rando's @ 85/90psi. Mounted on Open Pro's.

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Old 10-04-11, 07:24 PM
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Doubt that this will help anyone with their own bikes...

Garlatti - 630:32 Conti 1000 - fast and smooth as silk.

PLX8 - 700:32 Pasellas with room to spare... bike is a 700c French model.

Am really pleased with the Continentals for roll out and ride quality and Pasella's are as equally wonderful on the Peugeot which has plenty of clearance for higher volume tyres and may have well been designed for 700A which is a higher volume 622 tyre and a designation that is now obsolete.

Both bikes are sport class / light tourers so were built with bigger tyres in mind.



My 1951 CCM runs 700:38 Avocet Cross tyres... these are awesome and are surprisingly fast for being such fatties.

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