265/45R20 front · 295/40R20 rear

Why it’s first: N0 — Porsche: N-rated: Porsche tests candidate tyres on its own cars — steering response, high-speed stability, wet grip and how the tyre behaves with the engine's weight over the rear axle — and only a tyre that passes gets the N. The same-named tyre without it can have a different compound or casing. The number is the release of the approval (N0 the first, N1 a revision), so a set should carry the same one. The approved sets come before the rest.