Response from Goodyear and Pirelli, confirming they no longer have Gransport tyres
Goodyear -
In size 265/30R19 93Y we no longer list a tyre tuned around a Maserati. We used to produce the 265/30ZR19 93Y EAGLE F1 GS-D3 XL ROF MA but this ceased production some years ago.
In size 235/35ZR19 91Y EAGLE F1 GS-D3 XL ROF MA again this tyre used to be produced.
These tyres are of Run on Flat construction.
Unfortunately we do not produce a set of tyres front/rear in your combination.
Pirelli -
Good morning David,
Unfortunately, in the sizes 265/30ZR19 (93Y)XL and 235/35ZR19 (91Y)XL the P ZERO ROSSO has been phased out of our range which means we no longer produce these tyres.
We would suggest contacting Maserati direct for a suitable alternative as it is them that approve what tyres/brands are fitted to their vehicles.
So, it would appear Michelin Pilot Sport 4S, is the only realistic option to maintain the cars value and performance, unless anyone has a different view?.