The most recent Classic Porsche magazine mentioned that Porsche Classic was testing tires for older models and publishing the results on the Porsche Classic website so I decided to check it out. I was surprised with what I found. If I'm reading the table correctly when running 7x15 on the rears they suggest 215/60/R15 tires. I run 205/55 on my '73 and I don't think I can get 215 tires to fit without a fair amount of adjustment. Is anyone running 215's?

The table is here.