Does anyone know when Tioga merged/took over Mitsuboshi in the 80's?
Also when was the Comp IV launched?
I'm trying to date a set of Mitsuboshi Silver Star Competition IV tyres which have a label like this...
![](http://www.radbmx.co.uk/archive/albums/w194/ChevyMuscle454ss/compIV-----.jpg)
There is no Tioga markings anywhere on the tyres,so they are obviously pre takeover when Tioga arrived and the green blue labels came in like this..
![](http://www.radbmx.co.uk/archive/albums/w194/ChevyMuscle454ss/compIV83---.jpg)
I know i had a set of the green blue label comp IV's in 1984,so that would suggest the label up top were 82/3.