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Hi all. 

I was recently gifted an old Carrera Tony Doyle Epic GT road bike that I plan on riding the mile or so to my office and back every day. It had been stood in a garage for a few years, so the tyres wanted replacing.

I got a really good deal (like £6.99 each!) on a couple of brand new 25mm Vittoria Zaffiro tyres and fitted them to the bike. Unfortunately, the front tyre is too tall and rubs on the fork. Obviously I need something with a lower profile.

My question is, how can I find such a tyre? I don't know much about bikes, but manufacturers don't seem to list this dimension in the sizing information like they do with car tyres?

Any (preferably affordable) recommendations? I'm planning on keeping the Zaffiro on the rear. and will be rifding in most UK weather conditions. Cheers.

7 comments

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mike the bike [1194 posts] 1 month ago
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Aaah, a bike made for really skinny tyres; brings back memories, that does.  In those far off days 21 or 23mm were the tyres to be seen on, but now we know different and 25 is the absolute minimum any self-respecting rider would suffer.  And it looks as though 28 is about to take over at the top of the Christmas lists; where next you may well ask.

But, back to your problem.  There's nothing wrong with the Zaffiro, it's good value, but even better if it doesn't rub the paint off your fork.  You could try a 23mm, I guess it will fit, but it's only a guess.  Failing that, ask your LBS for guidance, they often know stuff like this.

And you can keep the useless 25mm until it replaces the one you wear out on the back of the bike.

Best of luck.

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Dingaling [67 posts] 1 month ago
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21mm! Luxury. I bought a second hand  steel framed Italian bike for my daughter to try out and it came with 20mm tyres. I will check with a bike shop or two what most riders are using on road bikes these days because last time I asked (2017) 23mm was the most common choice.

 

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mikeymustard [43 posts] 1 month ago
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What size were the original tyres?

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janusz0 [344 posts] 1 month ago
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Oh Great Dead Lord, rest assurred that a swarm of drowned Tsothoggians are painfully transporting a precious 18mm tyre through the deepest rocks for your great commute.

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ktache [1488 posts] 1 month ago
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I think I had got a 20mm tyre for my peugeot racer in the late 80s early 90s.

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madcarew [1003 posts] 1 month ago
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The reason bike companies don't give the profile height is because it is entirely dependent on the rim width and bead seating. I'd suggest you try a 23mm, or look around specialty tyre sites for smaller. In the 80's we raced on 19mm tyres, but they were tubulars.

ALternatively you could find a wider rim which will mean your tyre sits lower. Also you could try other brands of tyre, as not all tyre dimensions are created equal.

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hawkinspeter [3481 posts] 1 month ago
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I don't know why you're not just using some non-euclidean geometry to make the tyre fit.