But what is the recipe for 1.6 60' with street tires and full interior?

 

The right street tire and a driver mod.

 

if i have plastic Achilles do you think it hurts my 60' a lot? i managed 1.7 don't feel it's spinning.

 

I dont know what youre talking about lol. Plastic achilles?

 

meaning not so soft rubber,i put like 50K miles on them and thread is still acceptable lol

 

i cut 1.6 60ft on Dunlop fierce tires @ 32 psi tire pressure its just feeling out your car and take your time and floor and slip out very quickly.don't rush the launch let the car sit on the 2 step make sure not to over rev it comes with practice really not that hard.

 

Hard tires will hurt your 60 times.

 

true, but i started at 32 psi and made first pass to test track conditions and cut 1.7 so i didn't see the need to drop, 2nd pass cut 1.6 didn't see the need to drop so i left it there.I always believe in testing first then drop accordingly to track conditions.If the track is too sticky you don't wanna drop too much and if less sticky you may find the need to drop ALL DEPENDS ON HOW THE TRACK IS PREPPED.

 

but how you guys know it's spinning?i mean i never go sideways or anything like that.

 

I consistently netted 1.6 60 foots on Sumotomo All Season Tires. Just keep the motor revving and slip without bogging, once you are moving let the entire clutch out and your off. It's that simple.