You are buying: Four Toyo  Proxes R888 GG (medium compound) , 285/30zr18 97y reinforced.

They have been used for approx 30 minutes on track,  

 I would estimate only 10% worn ... so 90% remains.

They have been dry stored out of the sunlight.

There are no punctures or repairs, or damage to the beads.

I need to let you know that they are all ten years old by the serial numbers .

There are no external or internal perishing marks/cracks at all.

The tread surface is still reasonably soft.

(You can still get a finger nail to dig in) See last four new photos ref showing tyres are still soft and no cracks. 

I guess for ultimate performance you could use a tyre softener compound.

To help these sell I am now including free carriage.

Or for collection . Pay cash if collecting please.

Ps. These tyres are road legal. 

BUT as stated  by TOYO, they are not recommended for road use as there is reduced grip in cold and wet conditions.