Planning on getting some tires next year at wholesale from a friend of a friend. So I was curious about how much tires are usually marked up. I found a tire forum where lots of guys who own tire shops hang out. The consensus was average of 20-25%. However, MOST of them said that unless your selling large amounts of tires there’s no money in it. Several mentioned selling tires at almost cost, just to get people in, because in tire sales, the lowest price will always win, plus, having them in stock. They almost ALL said that their profit margin allowed them to do other things in the shop and that is where they sell up. Telling people they need new tie rod ends, alignment, ball joints, et. Al. Reminded me of another thread on here awhile back. Just beware...