Not all F104 tires are created alike I discovered when building the awesome OpenRC F1. Some rims are RACE branded and use one type of tire (like those included for the F104 in the OpenRC F1). Others like the highly recommended Shimizu rubber tires with foam inserts use stock Tamiya rims. These are such rims that suit the OpenRC F1. Like many RC tires they require gluing of the front and rear rubber to the rims. I used standard CA glue.