Wheel sizing - Wheel size. 1  The wheel size is the diameter of the wheel in inches where the beads of the tire sit on the wheel. This measurement does not include the rim flange. Modern road tires have several measurements associated with their size as specified by tire codes like 225/70R14.
While the minimum bid per keyword is 5 cents in AdWords, the high cost keywords listed above are nowhere near that. Google can make up to $50 per click from the most expensive PPC keywords. Keyword advertising is a highly lucrative business for Google. Learn more about the costs of AdWords here.
Cost per impression, along with cost per click and cost per order, is used to assess the cost effectiveness and profitability of online advertising.