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Hi, converting my old 26er to gravel and keen to know diameter of wheel + tyre for:
- 650b + tyre of 40 ish
- 700c + tyre of 35-40 ish
Thinking I'll prob need to go 650b, but be great to get some real world numbers - thanks!
As the tire sizes are essentially the same, the difference is just the rim. 650b is 584mm, 700c is 622mm so ~40mm, maybe 35mm if you use a 35mm tyre on the 700.
It’s substantial.
650b-42mm 672mm
700c-35mm 684mm (same as 650b-47mm)
brilliant, many thanks
I have an excel spereadsheet that does the same as the old wheel diameter visualiser website that I can share if you like.
I run a 26" 1998 Kona hot with 700c Wheels as a 'gravel' bike..
WTB Riddler 37 at the back
would probably squeeze a 40 in.. but it wouldnt leave more than a mm of clearance..
WTB Raddler 40 at the front in a Fox Float fork..
plenty of clearance under the fork brace.. but had to limit the suspension travel (with effectively a large bottom out bumper) in the float by 10mm or so as the crown hits the tyre at full compression..
just bought some 47 650b byways from the ribble sale to mount in another bike..
i dont have the wheels built up yet.. but mounted them on a rim to test and look at next to the 700c wheels.. and the diameter is a good 10-15mm smaller than the 700c wheels.. so they would easily fit in the front and rear of the Kona..
Wife’s 650x47 Teravail Cannonball = 684
My 700x40 Goodyear Connector = 710