Soyo 30a
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Category:  Tires
Name:  Soyo 30a
Brand:  Soyo
Model:  30a
Years:  1980's - Current
Country:  Japan
Weight:  135 grams
Added By: steveinjava on 08/27/08
Updated By: steveinjava on 08/27/08
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Soyo 30aSoyo 30a
Label MarkingsTire TypeTubular
SizesMax PSI ?
Sidewall TypeDesigned Use Road Training
General Information
I didn't know about these until this year when I saw an all yellow one on eBay- It had "world champion" on it and looked superb. (Too expensive to bid sadly)
I now know they made them in Black tread/ natural wall. Apparently they were .5mm narrower than the 35 so must have be near on unusable!
Pictures with the permission of

alex_japon
 who sells such stuff on eBay!
Quality:Rarity:
 
 
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Resources:Reference & Charts
Brand Information(click to expand)
Japanese manufacturer who sold a lot of track tubs for the popular keirin races in Japan. They were cheap and fairly true. There worst feature was the very hard treads which were not good in the dry but much worse than that in the wet!
They also produced cyclo cross tubs with tractor treads and standard road race models although it was the track ones the UK saw.
A mail order concern called "Sprint Tubs" based in the Wirral seemed to be the main seller- advertising in the back of Cycling through the 80's.
 
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