i usualy check my oil every three days or so and yesterday i noticed my oil fill cap missing , the last place i checked it was at work so i went back to work and walked all around by where i park and couldnt find it i couldnt find it in my engine compartment either . crappy tire doesnt have a listing for it so i bought a few that looked right but they were too small i will take these back and try again, does any one know what will fit ?