2008 Boxster S Track Tires

[stewartrose2012]

I am trying to buy track tires for a 2008 Boxster S to put on the original rims. Original tires are 265/40/18 and 235/40/18

I am doing track days and I am still leraning but I am having a hard time finding track tires that are the correct size.

I wanted to use Toyo RA-1's but couldn't find the right size,

I found some BF Godrich g-force R1 either 225/40 or 245/40 for the front and 265/35 for the back but wasn't sure if these sizes would work.

Any advice would be appreciated.