ok i got new tires about 6-7 months ago they are grooved for rain 2 deep grooves about 1 1/2 inch from the sidewall my front tires inside of that groove is wearin verry horibly prolly about 3/10th tred left on frnt but outside the grooves at least 7/10th tred left the rear tires are perfect i checked press to make shure not over inflated and they are perfect pres. cant figure out why its wearin so bad just inside the groove like i said outside of the groove still good ill go take some picks and post em along with this