Gecko Foams

[Chequered Flag Racing]

any one using them and which compounds for circuit using additive?

http://www.mardavespares.com/foam-tyres-and-accessories/gecko-racing-tyres

[Vinster]

I used them sunday with no additive on front and a smidge on the rear 37 rear and 50 front. both at 52mm

[KJR]

I run these at my local club. Normally a 37 rear but a 35 if the grip is really low. I don't run any additive and use a jap 46 front. I've found the contact rear to be very similar and maybe slightly gripper, the contact foam also feels firmer and less likely to chunk.