These summer tyre have a diameter of 17". The tyre's wet grip is rated at B, where A is the highest.
From Protyre
190/55ZR17 (75W) Pirelli Diablo Rosso III 190/55R17 (75W) | Protyre - Car Tyres
Tirendo
Pirelli Diablo Rosso III ( 190/55 ZR17 TL (75W) Rear wheel, M/C, variant D )
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