Your browser isn't supported
It looks like you're using an old web browser. To get the most out of the site and to ensure guides display correctly, we suggest upgrading your browser now. Download the latest:

Welcome to the MSE Forums

We're home to a fantastic community of MoneySavers but anyone can post. Please exercise caution & report spam, illegal, offensive or libellous posts/messages: click "report" or email forumteam@. Skimlinks & other affiliated links are turned on

Search
  • FIRST POST
    • samsung laptop
    • By samsung laptop 7th Jan 18, 7:38 PM
    • 300Posts
    • 21Thanks
    samsung laptop
    Bike tyres / inner tubes
    • #1
    • 7th Jan 18, 7:38 PM
    Bike tyres / inner tubes 7th Jan 18 at 7:38 PM
    I'm looking to buy a inner tube and tyre for my daughters mountain bike so if the tyre that's on the bike says (54-406) 20 x 1.95 can I replace it with a (50-406) 20 x 1.95 tyre. The inner tube I removed says 20 x 1.75/190/1.95 so can I replace it with a 20 x 1.75-2.125.
Page 1
    • pinkladyvenus
    • By pinkladyvenus 7th Jan 18, 8:38 PM
    • 265 Posts
    • 678 Thanks
    pinkladyvenus
    • #2
    • 7th Jan 18, 8:38 PM
    • #2
    • 7th Jan 18, 8:38 PM
    I would say yes to both questions. You are replacing like for like with the size of the tyre (20x 1.95) the 20 refers to the size of the wheel and the 1.95 is the tyre width both measurements are in inches.

    The inner tube you are looking to replace the original with fits tyres ranging from 20 x 1.75 to 2.125. (20 been the tyre size and 1.75 to 2.125 the tyre width again both in inches. A bit like a pair of socks that says fits size 5-8
    Last edited by pinkladyvenus; 07-01-2018 at 8:48 PM.
    Sealed pot challenge member 437
    • samsung laptop
    • By samsung laptop 7th Jan 18, 8:54 PM
    • 300 Posts
    • 21 Thanks
    samsung laptop
    • #3
    • 7th Jan 18, 8:54 PM
    • #3
    • 7th Jan 18, 8:54 PM
    I would say yes to both questions. You are replacing like for like with the size of the tyre (20x 1.95) the 20 refers to the size of the wheel and the 1.95 is the tyre width both measurements are in inches.

    The inner tube you are looking to replace the original with fits tyres ranging from 20 x 1.75 to 2.125. (20 been the tyre size and 1.75 to 2.125 the tyre width again both in inches. A bit like a pair of socks that says fits size 5-8
    Originally posted by pinkladyvenus
    Would you know what it means by the numbers (54-406) or (50-406). It's a lot different to years ago when you just went and bought a 20 x 1.95 inner tube.
    • pinkladyvenus
    • By pinkladyvenus 7th Jan 18, 9:05 PM
    • 265 Posts
    • 678 Thanks
    pinkladyvenus
    • #4
    • 7th Jan 18, 9:05 PM
    • #4
    • 7th Jan 18, 9:05 PM
    54 to 406 and 50 to 406 is the metric measurements of the tyre and its width. To be honest I always ignore these and stick to the inch measurements as it is easier when replacing tubes and tyres.
    Sealed pot challenge member 437
    • elverson
    • By elverson 8th Jan 18, 8:14 AM
    • 785 Posts
    • 503 Thanks
    elverson
    • #5
    • 8th Jan 18, 8:14 AM
    • #5
    • 8th Jan 18, 8:14 AM
    If you're not sure, just pop into your local bike shop and they can double check for you.
    • samsung laptop
    • By samsung laptop 8th Jan 18, 3:00 PM
    • 300 Posts
    • 21 Thanks
    samsung laptop
    • #6
    • 8th Jan 18, 3:00 PM
    • #6
    • 8th Jan 18, 3:00 PM
    If you're not sure, just pop into your local bike shop and they can double check for you.
    Originally posted by elverson
    We don't have any bike shops around me. We do have an Halfords about 3 miles away but would you trust them.
    • elverson
    • By elverson 8th Jan 18, 3:15 PM
    • 785 Posts
    • 503 Thanks
    elverson
    • #7
    • 8th Jan 18, 3:15 PM
    • #7
    • 8th Jan 18, 3:15 PM
    For everyday tyres and tubes, nothing wrong with Halfords/Evans etc. I wouldn't take a vintage racer into Halford for a full strip down and rebuild though.
    • Nebulous2
    • By Nebulous2 8th Jan 18, 8:56 PM
    • 1,880 Posts
    • 1,127 Thanks
    Nebulous2
    • #8
    • 8th Jan 18, 8:56 PM
    • #8
    • 8th Jan 18, 8:56 PM
    Would you know what it means by the numbers (54-406) or (50-406). It's a lot different to years ago when you just went and bought a 20 x 1.95 inner tube.
    Originally posted by samsung laptop
    You're going to wish you'd never asked!

    Sheldon Brown was a great source of knowledge on all things bicycle related. He died some time ago, and some of his stuff is dated, though I think there have been some attempts to keep it up to date. He is still about as good as you will ever need on tyre sizes however.
    • samsung laptop
    • By samsung laptop 10th Jan 18, 9:55 AM
    • 300 Posts
    • 21 Thanks
    samsung laptop
    • #9
    • 10th Jan 18, 9:55 AM
    • #9
    • 10th Jan 18, 9:55 AM
    54 to 406 and 50 to 406 is the metric measurements of the tyre and its width. To be honest I always ignore these and stick to the inch measurements as it is easier when replacing tubes and tyres.
    Originally posted by pinkladyvenus
    I asked a bike shop and they said 54-406 is usually 2.125 width tyre but it depends on manufacturer
Welcome to our new Forum!

Our aim is to save you money quickly and easily. We hope you like it!

Forum Team Contact us

Live Stats

3,007Posts Today

8,358Users online

Martin's Twitter
  • Quick #eng pre-match poll. What result do you predict?

  • I agree this glitch wasn't flights for 1p it was flights for c. £200 - I think many would've expected that to be th? https://t.co/QUTnlBLPkj

  • Was the BA fare glitch fair? Are you one of those let down by BA cancelling cheap flights to Tel Avivandr Dubai? H? https://t.co/PvN8Zaxbue

  • Follow Martin