These tires are excellent. The compound does seem a bit on the hard side but in real terms, these tires have a lot more traction than they seem. I had a set of Traxxas slicks on my Tamiya FF02 and it understeered like crazy. I then installed these Tamiya radials and now my FF02 has lift-off oversteer due to the massively increased grip. Plus the compound makes them last relatively long. I do recommend you use them with foam inserts to get the most out of them. These are great tires for a great price and are highly reccomended by me.