Such a simple idea

[Sp!ke]

but oh so clever....

 

[sym]

I hope you've patented that Sp!ke .... (or is it too late )

What are those ? Nokian ?

 

[Koolvin]

sweeeeeeeet idea! most tyres have wear indicators on anyway

 

[GrahamC230K]

The 8 through to 2 marking is an excellent idea.

I deally really needed accross the centre and both edges.

Despite checking and adjusting tyre pressures regularly I always end up throwing tyres away with uneven wear (on my last 4 rwd cars anyway).