SOHC.co.uk Forums > CB500/550
1978 CB550 F2
Chris400F:
--- Quote from: Nurse Julie on July 10, 2016, 11:01:40 PM ---Does it say 3.60 H19 ? Is that an old tyre size as it seems a bit meaty
--- End quote ---
I have no idea what Julie and Mr Green are looking at!
Back in the late 70's when I were a lad people removed the original fit Jap crap rubber and replaced it with TT100's or Avon Roadrunners.
If I remember right then 3.60 H 19 would have replaced an original 3.00 x 19 and similarly a 4.10 H 18 would have replaced a 3.50 x 18.
Can't remember why the sizing was different, something to do with the profile I think.
Oh, found this about dating on older tyres (from a US site, hence the spelling of 'tires').
"Tires manufactured during the 1980s had a three-digit code for the date, with the first two digits indicating the week, and the last digit indicating the year (355 would mean the 35th week of 1985) and tires manufactured in the 1990s had a three-digit date code but with a little triangle (Δ) after the code".
Haven't seen anything about tyres from the 70's, not that you would want to be using them anyway!
Nurse Julie:
I was looking at a bike on Fleabay Tom and the tyres looked a bit chunkier than they should be. I didn't know what would have been on as standard. I have now been to see the bike and they are indeed oversized.
mike the bike:
Thanks for the explanation Mick, I thought they were 506 years old.
Green1:
--- Quote from: mike the bike on July 11, 2016, 06:30:54 PM ---Thanks for the explanation Mick, I thought they were 506 years old.
--- End quote ---
Being in Wales yours probably are ;D
mike the bike:
Meaning...what exactly?
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