I did have a set of SRC terrain crushers. Sold them. Poor traction and puts suspension under extreme pressure. Didn't like them at all. Update on Terremoto tires, they blew up after a few weeks. Just ordered some backflips. So far the best tires I have found are Avalanche tires wrapped with braided fishing line. I have a set over a year old and still going strong with many speed runs over 70mph.