[Nonfractal]

I started a thread on slot.it tyres a while back.
It drifted off topic but but there is useful NSR tyre info in there. 
"A bit of sandpapering " will never be enough prep for supers/ultras.

Alan

https://www.slotforum.com/forums/index.p...ent&page=3
My 2021 proxy cars have all been shod with NSR 5260 to date.
I've had problems with the cars (guides, centre of gravity, ground clearance) but not with the tyres.