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39 Comments

  1. You may have some rubbing when leaning the bike to turn as the wheel naturally flex. Also even with Little thread, you may pick up some dirt and rocks that will scratch your paint.

  2. Nope. Wheel goes out of true or you pickup mud and you are wearing holes in it.

    Why do people try to go so large? I wish the sentiment in this sub wasn’t to tell noobs “go as large as you can” all the time especially for basically riding road.

  3. Ehhhhhh. It’s close. Those side knobbies might rub when the wheel flexes, though. I’d ride it around a bit, then take the wheel out and look at the fork where those side knobbies are sitting and if there’s evidence of rubbing, probably don’t keep running it.

  4. TheSalmonFromARN on

    A bit too tight for me, any flex in the wheel will cause rubbing. Your wheel will also need to be perfectly trued also otherwise thatll cause it to rub alot.

    Thats just my opinion

  5. I don’t know why you’d want fatties like that if you’re riding paved. You want less surface contact. I’d be rocking some 38’s personally.

  6. No, with just a little deflection you’ll rub the fork. I’d go down to 700×40

  7. ThatGothGuyUK on

    Not really… When you sit on them the pressure will increase and the bottom of the wheel will flatten out while the top bulges causing it to rub away the paint then the metal, also turning will cause slight warping to the side.

  8. Amazed by the number of comments saying that this is fine. Wheels have flex, and that tire is going to rub several times on every single ride.

    The tire is also going to have dirt sticking to it, and especially in the corner of the tire it will be the fork that cleans it away from the tread.

    OP: Please try to push the rim sideways so that the tire touches the fork. I’m sure you’ll notice how little force it takes.

  9. AntiqueSize6989 on

    Uhhh no. Tire flex in both corners and flats will destroy that fork.

  10. Impossible-Play-4356 on

    You’ll be amazed how rubber beats carbon.. I would bet it becomes structurally damaged in less than 200mi.

  11. Hard no.
    A few reasons – the wheels moves laterally a bit under load; dirt gets flung around; likely toe overlap that might be troublesome; 45c tires exist and the real world difference between 45c and 50c is very slim.

    I’m pretty liberal with bigger tires and have tested some aggressive fitments – that wouldnt make it out of the garage. Having pushed it, the tire hitting the frame is a performance killer forget everything else. The bigger the tire, the more space you need. You need to be able to take a 4mm hex key around the space. The front doesn’t move around as much as the rear tire does, but that fitment is a clear fail.

  12. If you hit even a bit of mud, you’ll be in for some trouble. Imagine coming across even one ditch with peanutbutter mud and coming out the other side with rocks and dirt sticking to that. I wouldn’t run it, personally.

  13. Stuff will get picked up and spun around the tire and it will jam in the fork or stays. Especially if it’s wet out.

    I like 1/4″ all around for normal road riding. There’s less rubbish on the road and you can often dodge it.

    My TT bike only has 1/8″ clearance between the rear tire and the faired seat post and stuff has got jammed in there before. Just a risk of that kind of bike but you’re usually riding on a better road surface.

    I have a lot more clearance on my gravel bike, probably 3/8″ or a bit more.

  14. Perpedualmotion on

    Maybe go to a 40mm or so tire? That is awfully close. A bit of hard cornering and it will likely rub. Any casing bulge and you could be on your face. Any tire 35mm or larger will let you run ridiculously low pressure for the road.

  15. Infamous_Air9247 on

    Side to side is extreme. Wheel flexes and will rub. Choose a 4 mm at least narrower tyre

  16. Defiant_Employee6681 on

    No. Stop being ridiculous. Of course it’s bloody not! Just look at it!!

  17. 92beatsperminute on

    No that is to wide. Any mud dog shit or anything that stuff like stones can stick to will scrape your forks and most likely your rear stays too. I would go 37.

  18. BidSmall186 on

    If you’re running mostly paved roads, why run those tires? It’s definitely not enough clearance for any amount of wet gravel/dirt roads.

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