At Tyres.co.uk, tyre options for the Hyundai i10 include Michelin Primacy 4 and Goodyear Vector 4Seasons Gen-3 in 185/55 R15 for the current Advance trim. For Hyundai i10 Premium and N Line versions, which use 195/45 R16, please check the registration, load index, speed rating, and specifications before you order.
The sidewall of the Hyundai i10 tyre has its tyre size printed on it. The driver's side centre pillar also has a vehicle tyre-information placard which can be accessed when the driver's side door is open. For the approved specifications, you may also refer to the handbook, along with the current tyres.
You do not need to replace all four tyres on a Hyundai i10 as each version is front-wheel drive, meaning there is no prop shaft to create a requirement for all tyres to be matched. The UK safety guidelines state that if you are going to fit a pair of new tyres to the car, then the new tyres should be fitted to the rear axle. In terms of practical and safety considerations, replace tyres in pairs per axle.