Nick Payne
Joined: 10 Jan 2004
Posts: 2626
Location: Canberra, Australia2/14/17 3:58 AM |
The size moulded on the sidewall of the tyre is presumably at the behest of whomever they're being made for. All the Grand Bois tyres I've used - 700x30 on Mavic Module 3 rims, and 650bx38 and 650bx42 on Synergy rims - have all been between one and three millimetres undersize when measured after several weeks of use.
I mounted one of the Compass nominal 48mm tyres earlier today on a DT Swiss XM1501 wheel - 27mm external width rim - and they measured 47mm on initial inflation to 30psi - based on past experience they'll expand 1-2mm over the next few weeks. In fact, if I pull out the tube and run them tubeless they'll probably grow a bit more than that.
The two sizes of Pasela I've used - 700x32 and 700x35, were both one size under - the 32s were 28s and the 35s were 32s.
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