I just with the bike marketing dept would use (or at least list/mention) some decent comparable measurement for the naming to help to end all the sizing confusion that surrounds wheels and tyres...ie the ISO/ETRTO system.
The car tyre/wheel industry doesn't ever refer to the OD of the wheels, just the rim diameter and tyre profile: 225/45 ZR17 etc.
26"/27.5"/29"/29.5"/32"/36" etc are meaningless since the OD that they refer to will change depending on the tyres height/width.
650B/700c etc terms are even worse, since the code number refers to an obsolete total wheel diameter that is nowhere near the actual diameter these days.
29.5"/750d = **-660
32" = **-686
36" = **-787
Thankfully the 750d/29.5"/**-660 looks to be mostly marketed as a gravel 29-er; bigger diameter gravel wheel for the tall riders.
All the best,
The car tyre/wheel industry doesn't ever refer to the OD of the wheels, just the rim diameter and tyre profile: 225/45 ZR17 etc.
26"/27.5"/29"/29.5"/32"/36" etc are meaningless since the OD that they refer to will change depending on the tyres height/width.
650B/700c etc terms are even worse, since the code number refers to an obsolete total wheel diameter that is nowhere near the actual diameter these days.
29.5"/750d = **-660
32" = **-686
36" = **-787
Thankfully the 750d/29.5"/**-660 looks to be mostly marketed as a gravel 29-er; bigger diameter gravel wheel for the tall riders.
All the best,
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