How long should 3-4mm of tread last?

[void-]

i would say 30,000kms thats taking it easy sawell all imo ofcourse

[connorling]

its all up to you, as long as the wheel diameter remain the same of within resaonable.
otherwise your speedo will be off.

Also with thinner tyres, it makes the car less confortable, and dont forget to pump to tyre pressure to ~40psi cold to prolong the life of the tyres.

I was originally going for KU31's before I went for Perilli's, can't remember why I changed my mind

Am I able to choose the thickness of the tyre wall when choosing a set tyres? I've seen some with really high walls and some with walls alot lower.

[IDV8]

Cheers for the replies