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Is it possible to change from road tyres to commuter tyres on a 2014 Giant Defy? Thanks

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    Changing tires is relatively easy, so long as the size of the new tires suits the existing rim and frame clearance. – Daniel R Hicks Jan 7 at 3:23
  • Question title needs an update, its about tyres not wheels – Andy P Jan 7 at 9:39
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    @AndyP You have enough reputation to unilaterally make the edit. Just Do It.™ – David Richerby Jan 7 at 10:49
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That model of Giant Defy will have clearance for almost any 700×28 tyres and some 700×30 models, but not all. If you are after a commuter tyre for increased puncture resistance, a Schwalbe Durano plus in 700×28 will be as good as any of the wider commuter tyres and will perform just as well on any sealed surfaces. If you want to ride a bigger tyre for better grip on gravel and unsealed roads, then your options are very limited.

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    Short of MTB trails or roads surfaced with loose broken stone you can ride pretty much any road or bike path on 28s. If it is a little rough I'd want something a bit tougher as well as a little more grip - but only something like marathon plus. Even with 28s you'll struggle to get mudguards in there, and they're good to have commuting in imperfect conditions – Chris H Jan 7 at 7:46
  • I'll note that 28s can be a bit iffy on the rear wheel if you're loading up the rear panniers on that road bike commuter with 10-15 kg or 20-30 lbs of stuff. If you're going to load a bike like that, you really do need larger tires, especially on the rear. – Andrew Henle Jan 7 at 10:53
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    @AndrewHenle That depends how much you weigh ;) I could load 20kg extra over the rear wheel and it wouldn't be any different to a larger bloke riding the bike unloaded. – Andy P Jan 7 at 11:24
  • @AndrewHenle I run marathon plus 28 on the back of a hybrid with a ~20kg passenger in a ~3kg seat, and I'm over 80kg myself. You've got to pump them up quite hard though. It looks like durano are rated to a high enough pressure as well. – Chris H Jan 7 at 13:49
  • @ChrisH And you're real careful that you don't hit pavement edges square on at speed with that, aren't you? ;-) – Andrew Henle Jan 7 at 14:12

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