These summer tyre from Dunlop have an 18-inch diameter. The maximum allowed speed is H (210 km/h), and is the maximum speed the tire may be exposed to.
From Protyre
100/90-18 56H Dunlop TT100 GP 100/90-18 56H | Protyre - Car Tyres
Tirendo
Dunlop TT 100 GP ( 100/90-18 TL 56H Front wheel )
This product is also available at 1 unverified merchant.