Quote:
Originally Posted by Si Coe
They weren't at all like yellows. For a start they had way less grip than yellows!
CAT tyres used to come in Soft or Hard. Hard could be used for a nuclear blast shelter, but had no grip, Soft had more grip but died in a meeting or two on tarmac.
When Blues came out, they offered Hard durability but Soft performance, and sales of softs dried up. Pretty soon you could have any compound as long as it was Blue. A few die-hards still used Softs as they said they had a little more grip, but the appearance of Green killed that. Greens were grippier than Softs but lasted longer.
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I remember it a little differently. I'm sure the old softs were also marked with yellow paint, making me assume they were the same compound as current yellows. The old hards were marked with red paint and were, I think, a lot harder than the blue compound.
I have seen cars running newly bought soft full spikes indoors in the fairly recent past. Perhaps someone on here has a set and can look at the compound marking?
Back in the early 90s when I was racing indoors the tyre of choice had become the 2.2" full spike in blue. Greens were a different kind of compound altogether and never worked on the slippy floors.
Coming back to it more recently I was running yellow 2.2" full spikes on an all-slippy track. Once you'd taken the tops of the tyres seemed to last forever with good grip. On a multi-surface track the full spikes are a bit grabby, minispikes or minipins are better depending on how much grip there is.