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Old 09-17-13, 07:43 PM   #1
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New tires, went a size up this time

I have been riding 700 x 23 since I got my bike 10 years ago, but went with a 25 this time. Continental 4000. I like the feel of this brand tire, nice and supple with good road feel. I can already tell the 25 cushions the ride as I do not feel the smaller imperfections in the road that I did on the 23's. Thinking I am gonna like this setup just a wee bit more for the comfort factor. I weigh just under two bills, I probably should have been on this size long ago.
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Old 09-17-13, 08:05 PM   #2
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Yep. Size is important......
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Old 09-17-13, 08:15 PM   #3
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I did the same thing about two months ago. But honestly can't tell any difference between the 25's and 23's. I ride Michelin Pro's, but I don't believe that is the difference, as they ride really well.
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Old 09-17-13, 08:20 PM   #4
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25's rock. Do you need to reset any computers or ???
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Old 09-17-13, 08:21 PM   #5
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32 is a very nice all-around size, especially if road surfaces are imperfect. Imperfect is the norm, by the way.
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Old 09-17-13, 08:22 PM   #6
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25's rock. Do you need to reset any computers or ???
Check my other thread: http://www.bikeforums.net/showthread...597-My-mistake
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Old 09-17-13, 08:28 PM   #7
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Yep. Size is important......


To the OP: I've got 23s, 25s 28s and 32s on different bikes. I tend to ride the 25s the most. It seems to be the best balance between comfort and performance.
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Old 09-18-13, 03:27 AM   #8
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I went from 23s to 25s on one of my bikes. The increase in comfort was definitely noticeably. Both my bikes will have them next season.
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Old 09-18-13, 04:43 AM   #9
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I switched to 25's on my road bike years ago just to counteract all the chipseal we have in the area. Two mm of rubber and 10 less pounds of pressure was all it took to eliminate all the road vibration that was causing pain in my wrists.

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Old 09-18-13, 06:16 AM   #10
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To the OP: I've got 23s, 25s 28s and 32s on different bikes. I tend to ride the 25s the most. It seems to be the best balance between comfort and performance.
Same here for sizes. I've tried to move up to the largest tire my bikes will allow. Comfort is better, and I think the larger sizes are safer (more resistant to road hazards and surface irregularities).
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Old 09-18-13, 09:13 AM   #11
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Have you change the pressures that you run? On 23's I go with 120 psi. With 25's I can get away with 100 psi and not worry about pinch flats. I weigh around 210 lbs.

I like riding on 25's much better than 23's.
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Old 09-18-13, 09:28 AM   #12
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I just replaced my worn-out 23mm Gatorskins with 25mm Conti Grand Prix 4 Season and like the feel. Should have made the move sooner.
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Old 09-18-13, 09:32 AM   #13
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Same here for sizes. I've tried to move up to the largest tire my bikes will allow. Comfort is better, and I think the larger sizes are safer (more resistant to road hazards and surface irregularities).
+1

I tossed the 700 x 23’s that came on my 2011 Trek 2.1 road bike. They only had 40 miles on them when the rear succumbed to a classic snake bite pinch flat and when it released its 125 PSI, it blew out the sidewall of the tire. That was the one and only time I’ve ever experienced a pinch flat and it was at 25 MPH. I wasn’t the least bit amused that my new road bike was instantly riding on its rear rim as a result of that pinch flat! I vowed I’d never ride on 23’s again, as they felt like I was riding on iron wheels even at their lower tire pressures.

The largest tires that my road bike will accept are 700 x 28’s, so that’s what I mounted and they provide a pleasingly satisfactory ride and high speed descents don’t feel as scary as on those horrid tiny 23’s.
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Old 09-18-13, 10:17 AM   #14
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Interesting. I'm on Gatorskin 25s now and am thinking of going to 23s to see if the bike feels more responsive. Now wondering if thats a good idea.
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Old 09-18-13, 11:00 AM   #15
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32 is a very nice all-around size, especially if road surfaces are imperfect. Imperfect is the norm, by the way.
+1. Going with a high end 32mm tire means a more comfortable ride with very little (if any) loss in performance. Works much better for gravel and (*cough cough*) the heavier among us.
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Old 09-18-13, 04:14 PM   #16
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+1. Going with a high end 32mm tire means a more comfortable ride with very little (if any) loss in performance. Works much better for gravel and (*cough cough*) the heavier among us.
I've now switched over to Grand Bois tires on all our bikes: 32mm on the Rambouillet, 28mm on the Marinoni and the Miyata 912. Unfortunately, my wife's Erickson can only take 26mm. Definitely high end, less weight, very comfortable and very low rolling resistance, and worth it to me.

http://www.compasscycle.com/tires.html
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Old 09-18-13, 09:40 PM   #17
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I've been thinking of going with fatter tires myself.


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Old 09-19-13, 08:42 AM   #18
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I've been thinking of going with fatter tires myself.
I don't think going that wide is necessary for every day riding, but it's clear that you can ride in a lot of strange and quite fun places with tires like that. I completely get the appeal.
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Old 09-19-13, 09:15 AM   #19
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I've found 28's to be the sweet spot - robust tire, no flats, go anywhere, and I can still run them around 100psi. I run Gators, but am looking at Clement Stradas just for a change next time.
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Old 09-19-13, 09:34 AM   #20
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My wife's bike, a Trek 2.1 WSD, came equiped with 23's. Unless she was very diligent about airing the tire before each ride, she had a better than average chance of getting a pinch flat. She had lots. This is not only a pain in the rear on a ride, but it gets expensive after a while for tubes and co2. So, I'd had enough and switched her to 25's. POOF, no more snake bites. She doesn't have to air up the tires everyday either. In fact, it seems that a tire has to be pretty soft before a pinch flat will occur. The ride is a bit smoother, with no real noticable increase in rolling resistance. I also have them on my Trek 7.5. no pinch flats there either, except when I was too lazy to air up the tire before a ride.
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Old 09-20-13, 05:41 AM   #21
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Figures, third ride on the new tires and the rear flatted. A shard of the new chip seal I rode on last ride worked its way through.
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Old 09-20-13, 10:17 AM   #22
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Ain't that always the way. (God, I hate chip seal).
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Old 09-20-13, 11:53 AM   #23
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I ride 25c tires at 190# (currently). I use about 95-100 psi. When I rode 23c tires I usually inflated them to about 105-110psi. There is no need to ride 23s at 120 psi unless you ride on glass smooth roads. I could probably get away with even lower pressure on the 25c tires but they feel pretty good now. Of course I don't inflate them every ride, just a squeeze test, so they are probably lower than I think.
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Old 09-23-13, 10:59 PM   #24
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We should all keep in mind that tire makers' posted width are notoriously unreliable.... so you may only "think" you're on a 25mm. Best 25mm I've ridden is the GP 4000.

Incidentally.... I weigh 165 and keep my 25's at 95 rear and 90 in front.

My 28mm Paselas I keep at 85 rear and 80 in front on a variety of road surfaces.
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Old 09-24-13, 01:45 AM   #25
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Been riding mostly on 28s and touring rims with 36 dbl butted standard three crossed spokes laced to regular small flange hubs since the '80s.

They stay trued on the mean streets and the tires soak up those big rock chip seal shoulders better even at 110 psi.

Laced up some lighter century clinchers for the 23s (same spoke setup) but don't usually ride on them much any more.
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