I am looking forward to the dirt in honesty, but I agree for those running multiple trucks all setup for Astro its a big extra cost.
I see last year there were 2 rounds at coventry so why not just add another round in there again that way the tyres will get more than one round. I will use the tyres again anyway so its not an entire waste for me.
A control tyre for dirt would have saved me many many hours of trawling the web and made the buying process far simpler.
As for weather it looks fine and dry at Coventry airport all weekend, also only forecasting 4mph winds which seem very low and will help with the jumps a bit perhaps