Before our first Thunderslot race can everyone check to make sure you have the right tires. After the group C race many ran their Thunderslot cars. Later when I ran I found the yellow and green lanes had lost their grip considerably. the blue lane was great. Possibly Silicone tires were accidentally used. Make sure you have on your package TYR004R The other tire they offer is TYR005RX for carrera may have a different compound, since were not sure do not use these. If anyone needs tires today to have them ready let me know i can meet you I have a few extra.