I know it may seem **** but it depends on the era or time period you are shooting for. For my '33 I have 7.00's out back and 6.00's up front because those were the tires for the period. Not many guys were running 7.50's back then and even though it 's a small difference it looks the part. For the fronts I have changed my taste in the past few years. I used to like the smaller tires like the 5.50, 5.00, and 4.75's but now after studying wheel bases and proportion I think more often then not I would go for 6.00's up front with 7.00's or 7.50's out back. the bigger tire up front visually shortens the wheel base which I like. On my '35 though I am running 5.50's up front because the fenders could possibly rub through turns on a bigger tire. Out back I am running these monster 32" tall 7.50's that are made by lester. Huge! But yeah check out the link GATOR provided. It should have all the answers you need!
The Jalopy Journal
