It's the same here in sweden, must have a DOT tyre.
i've tried som MH Racemasters slick with grooves on my former car, a Pontiac TransAm GTA -88, with 5.7L engine, minor mods (no Cat, Chip, Open Air filter, modded intake, Progressive fuel pressure. Estimated 280Hp.
The tyresize was 305/50-16.
they were used, and barely leagal, but in an ordinary road, a couple of years old surface, the grip was not satisfying.
but a little better than the Cooper Cobra GTH 245/50-16 standard tyre.
But on a road with new surface, the grip was decent, not perfect, but ok, Approx 1-2 metre of spin, with full throttle start.
And now i need good grip for my GN with alot more than 280Hp
will the 28/10-15 M/T Drags give me a satisfying grip in an ordinary road? or may a bigger tyre fit in the rear on my GN?
I'm going to buy aftermark rims, Size 10x15 inch.
Tanks!