Bike fit / correct riding position

I’ve just measured a pair of Empire’s against my Sidis to verify the difference. The shoes are different sizes but fit the same. The Empire 45’s carbon sole is 280 long and the Sidi 46’s is 285. I chose to measure two dimensions to compare:

1. top-bolt centre from front-centre of shoe
   
2. top-bolt centre from rear-centre of shoe
   
   

Giro Empire SLX 45:

1. 84
   
2. 200
   
   

Sidi Wire Vernice 46:

1. 77
   
2. 207
   
   

So it appears that the Empire’s cleat position is 7mm further back. There is, of course, margin for error in this but I was pretty consistent in my measurements using a steel rule.

I was hoping for at least 10mm. I might give the Patrocleats a go.