At Tyres.co.uk, alternatives to the Fiat Fullback's original equipment tyres include the Goodyear Wrangler All-Terrain Adventure (111T) and Michelin Latitude Cross (111H) in 245/65 R17 for 17-inch factory variants. Please note that variations in variants of the Fullback, including wheel and body styles, may impact original load index and speed rating as well as reinforced specs. Please ensure you verify this against the registration.
There are labels in the door openings (revealed when the driving door is open) in the Fiat Fullback with instructions for tyre size and pressure. These will be labelled on the tyre sidewalls as well. The approved combinations of tyres and wheels are outlined in the Fiat Fullback's owner handbook, but refer to the label first.
The Fiat Fullback does not need four new tyres. However, if it is a 4WD variant, then all four tyres must be of the same size, type, brand, and have similar wear in order to prevent damage to the drivetrain. It is considered good practice, by UK tyre safety standards, to replace the two tyres being fitted to the rear. Should it not be possible to maintain a matched pair, then all four tyres must be replaced.