I have five tc4's : One 17.5t tub, One mod brushed tub, One fttc4 13.5t, One fttc4 mod 3.5t(supermodded), One 4.5t hv (4s) tub for high speed fun... I use them lightly whenever I find time to race, buy mostly put the mileage on the tub 17.5t... I also have many other cars (all shaft) that I use, so my tc4's stay new, no crazy breakdown necessary ever.... I which I had more free time to race more, but it's not the casr... I am very happy with them, and won't sell them for nothing...lol...