I replaced my at the begining of the season. I had been running 4 inch since I had it. Not I have 4 and 6 inch combo, 4 on the outside, 6 on the inside. I am really happy with this combo. I would have just got the 4 inchers but Idooski told me to get the 4,6 combo and I would corner better. Completly true. :thumbsup: