Tube Size

Here you can talk about all kind of TECH for the B50 B44 B25 And Other BSA unit Singles

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Keefe
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Tube Size

Post by Keefe » Sat Jun 01, 2019 10:28 am

I ordered a new tube for my rear tire which is 400-18. Unfortunately, the tube delivered is 325/350-18. Is this close enough in size to use, or should i be getting a replacement from the company?

Keith
!974 Triumph T150V
1974 Triumph TR5T
1971 BSA B50 Frame with a 1959 Triumph 3TA Engine
2007 S*zuki Bandit 1200 K6

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minetymenace
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Re: Tube Size

Post by minetymenace » Sat Jun 01, 2019 12:31 pm

Not enough info, to advise. If the bike is rolling and the sun is out, ride now and insist on getting what you ordered (would you accept a short measure in a pub?

If the sun is out, the bike is ready to go but the tyre is off the rim, and your rim is smaller than 4 ins, I would damn the torpedoes, fit it and ride. After you've ridden 20 miles other worries will dominate.

You did't get what you ordered, it is the wrong size, go down you local bike shop, get the right size and send the other back for a full refund....

Choices, choices...
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Re: Tube Size

Post by SteveS » Sun Jun 02, 2019 10:07 am

Hi,

Quite a few suppliers list an inner tube that fit a range of tyre sizes e.g.

Michelin 18MF (Centre Metal Valve) Motorcycle Inner Tube
Can fit: 3.25-18, 3.50-18, 4.10-18, 100/90-18, 110/80-18.

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Steve Sewell

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Re: Tube Size

Post by BSA_WM20 » Sun Jun 02, 2019 3:33 pm

It will all depend upon the quality of the tube.
f it is a cheap tube that was very thin to start with and you are now stretching it even further than it was designed to go then it will be more lible to a catrastropic failure.
If it is an expensive tube with thicker rubber it will not make any difference over those sizes
A smaller tube over inflated is far less of a problem than an oversized tube which will inflate with a crease which will in time fail along the crease line.
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Re: Tube Size

Post by Keefe » Sun Jun 02, 2019 5:22 pm

Thanks guys. I contacted the supplier and they apologised and are sending me the correct one.

The 40 year old one that i took out still looks good, even the puncture repair that i did looks okay, but that would have been asking for problems and i'm not that much of a cheapskate, lol.

Keith
!974 Triumph T150V
1974 Triumph TR5T
1971 BSA B50 Frame with a 1959 Triumph 3TA Engine
2007 S*zuki Bandit 1200 K6

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