Wide Rims and Tires: Real Measurements

[fogman]

Here is my database of various tires I have measured with a digital caliper over the years:

Measured Tire Widths @ 100 psi:

Bora Clincher C17:
Conti GP4000S II (23c) = 25.4 mm
Conti GP4000S II (25c) = 26.7 mm
Vittoria Corsa G+ (23c) = 24.7 mm
Vittoria Corsa G+ (25c) = 26.6 mm
Vredestein Senso (25c) = 25.4 mm
Schwalbe One (25c) = 26.2 mm

Shamal Clincher C15:
Conti GP4000S II (23c) = 24.6 mm
Vittoria Corsa CXIII (25c) = 26.7 mm

Bora Tubular:
Vittoria Corsa CXIII (25c) = 26.0 mm
Vittoria Corsa G+ (25c) = 24.6 mm


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[Terrordact]

Mounted GP5000 700x25 clincher tires to LB 56 deep 30 external 23 internal rims. At 80psi they measure 28.19 perfect for the 105% rule even with a little stretching.

[iamraymond]

DT Swiss - PRC 1400 SPLINE (18mm inner / 25mm outer width):
-Vittoria Corsa G+ 25mm (85psi): 26.5mm
-Vittoria Corsa G+ 28mm (65psi): 28.0mm