plug is center of tire, in one of the groves with lots of tread to go before coming close to it. I figure it will do just fine. I already love the bigger grip, for it really does make a difference. I could roast my 255 HANKOOK VENTUS S1 EVO XL, but with these bigger Toyo Proxes T1R, I may spin but will get traction quickly. I can't wait to grab a nice 60ft, for 2.15's aren't gonna cut it, lol.