okay heres the situation. my truck came stock with 16 inch wheels. its time to buy new tires but 16's are not to cheap. now should i try to look for cheap tires sumwhere or should i just degrade to a 15 and slap on sum 31x10's or sumthing. cause i know i can find 15 inch tires anywhere cheap. im just a lil worried about havin this problem everytime freaking time i need tires.