From the Super Mario Wiki
Blue Standard tires (known as Normal Blue in the British English version) are the palette-swapped counterpart of the Standard tires, except with chevron-shaped treads. They first appear in Mario Kart 8 and Mario Kart 8 Deluxe as an unlockable tire part. In the original Mario Kart 8, they share identical stats to the Standard, Off-Road, and Retro Off-Road tires; they are well-balanced with no strengths or weaknesses. In Mario Kart 8 Deluxe, CPU Mario occasionally uses this tire whenever he is using the P-Wing, Toad occasionally uses this tire whenever he is using the Sneeker, and Larry and Baby Rosalina occasionally use this tire whenever they are using the Standard ATV.
The Blue Standard tires return in Mario Kart Tour, equipped on the Jingle Bells and P-Wing karts. On the former kart, they have a different appearance than in Mario Kart 8, while on the latter kart, they have their original appearance.
Mario Kart 8 / Mario Kart 8 Deluxe
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