Hi, another quick message!!!! 
  
Just noticed previous owner has the following tyre set up! 
  
Front left: 225/40/18 
Front Right 225/45/18 
Back: Both 245/45/18 
  
Now this explains a very slight pull to the left!! No traction control issues at all, car drives great. the front right is needing replaced anyway so am I ok to match the left with a 225/40/18?? Also does the front have a diff?? Is this now worn? ohhh please tell me it aint.... 
  
What garage replaces a car tyre with different ratios??? hmmm rhymes with Barnold Shmark.... 
Info required ASAP my 350Z experts. My local Garage waits me tomorrow! 
  
Cheers guys!!