Ford Focus 2021 tyre size

The 2021 Ford Focus left the factory on 195/65 R16, 205/60 R16, 215/55 R17, 215/50 R17, 215/50 R18, 235/40 R18, 235/35 R19. Which of those your car uses depends on the wheels it was built with or has been fitted with since, so confirm the size on the sidewall of a tyre already on the car, or on the placard inside the driver's door shut, before you order.

It is moulded into the sidewall of every tyre, reading like 205/55 R16 91V. Most cars also carry a placard in the driver's door shut, inside the fuel filler flap or in the handbook, listing the sizes and pressures the manufacturer specifies.

Only within limits. The size affects speedometer accuracy, handling, and whether the tyre clears the bodywork and suspension, and a size below the load index the vehicle needs is dangerous and can invalidate insurance. Stick to a size the manufacturer lists for your car unless a tyre specialist has confirmed an alternative is suitable.

On most cars, yes. Some performance and rear-wheel-drive models use a staggered fitment, with wider tyres on the rear than the front — those are listed separately above where they apply. Tyres on the same axle should always match in size, construction and tread pattern.