It is every scale modeller's biggest challenge: applying decals to the tyres. Strangely, though, whilst Formula One kits are generally more finicky than those of their WRC or DTM counterparts of the same scale, the decals supplied with the former are a comparative doddle.
The reason is simple: real life DTM and WRC cars run tyres with aspect ratios (simply put, the relationship between sidewall height and tread width, also known as tyre profiles) of anything between 25 and 35 (depending on the road surface and application), F1 tyres currently have aspect ratios of 55 (front) and 45 (rear). And, kit makers scale the tyre sidewalls accordingly ...
The actual F1 sizes provided this year are, according to sole supplier Bridgestone: 265/55 R13 (front) and 325/45 R13 rear, where the first number in each instance is the width in millimetres, the second is the aspect ratio and the 13 refers to its inner diameter in inches.