Er, inner tube sizes ... help!

[horse27]

Nothing to do with our lovely spoked alloys and tubeless tyres but I need advice on which inner tubes fit which tyre ...

I am sure it is simple but I have been confused and it must be stopped now! Been searching the web for a simple answer but guess I am looking the wrong place.

Say I have a 130/80-17 and a 100/90-19 ... which tubes do I need?

For the 19" I am offered:
300-19
325/350-19

For the 17" I am offered:
200/225-17
250/275-17
300/350-17
400/460-17, etc, etc.

Is there a conversion chart or a simple way to know which tube fits which tyre, etc.

Looking forward to the 'Lee, you are being daft reply ...'

Cheers, Lee.

[winger]

100/90/19 you'd put a 325/350/19 and for the 130/80/17 you'd put a 400/460,there is a conversion chart and those in the know ignore it and go gut instinct.

[horse27]

Cheers Winger ... much appreciated.

How did I know it would be you to answer!

For those whose guts are without instinct (too much cider as a child) - I'll try and get a chart from somewhere.

Cheers.

[winger]

Well i can't tale all the credit,i know a man that does,and phoned him,he's got a chart and poo poo'ed it,hence the gut instinct.

[horse27]

Thanks mate - very good of you.

Tubes ordered - odd things these tyres with metric mixed with imperial and some ratios thrown in for good measure.

Cheers.

[nab 301]

For those whose guts are without instinct (too much cider as a child) - I'll try and get a chart from somewhere.

Cheers.

Winger has answered for you but on the rare occasion that i'm stuck I've used the avon site under technical

http://www.avon-tyres.co.uk/motorcycle/ ... =tech_size

I've used here to tyre my Enfield and MZ (and all the sizes are listed too)

http://www.central-wheel.co.uk/tyres/cl ... e_list.htm

[horse27]

Excellent ... all the info I could have hoped for.

Thanks again chaps.