I was looking at the Spiral on line and saw that the tires on it were stamped with 'goodyear' proline did the same when they made the rc10 tire. Associated also had a number of 1/8 scalers. I think you're on the right track. A couple pics of the wheel and tire all broke down would likely help...
Yes, I am referring to proline. Proline has been around for a LONG TIME. I am familiar with the oldshool wheels and the way they were assembled being totally different than today's tires. I did not run one as heavy as yours but back in the day, a LOT of is ran tires similar to yours. RC10s were...