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325/30 R19 Tyre Specifications

The rear size for the staggered-wheeled Porsche 911 GT2 is 325/30 R19. 325 indicates the width of the tyre in millimetres. 30 indicates the height of the sidewall as a percentage of width. In this case, 30% of 325mm is approximately 98mm. 19 indicates the diameter of the rim in inches, and the R indicates radial construction. This combined with a 19-inch rim gives an overall diameter of 678mm. This low sidewall rear tyre supports the rear under hard acceleration, but it cushions bumps less. 325/30 R19 tyres are available from us on Tyres.co.uk, including XL variants.

Part of the sizeValueWhat it means
Section width 325 The width of the tyre across the tread, measured in millimetres.
Profile (aspect ratio) 30 Sidewall height as a percentage of the width - here, 30% of 325 mm (about 98 mm).
Construction R Radial construction, which is what nearly all road tyres use.
Rim diameter 19 The wheel diameter the tyre fits, measured in inches.
Your tyre dimensions
MeasurementValue
Sidewall height 97.5 mm (3.84 in)
Overall diameter 678 mm (26.7 in)
Circumference 2,129 mm (83.8 in)
Revolutions 756 per mile · 470 per km
Equivalent sizes
SizeOverall diameter
305/30 R19 666 mm · -1.8%
305/30 R20 691 mm · +2.0%
305/25 R20 660 mm · -2.5%
315/30 R20 697 mm · +2.9%