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Tyre sizing

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Jaan:
Typically S7s are low profile tyres (these days) but with a wider bead so they're too big for 1.75 rims - 20 x 1 3/4 only fit Schwinn rims

Jaan:
Porkchop sell 20 x 1 3/4 tyres and have this disclaimer:

* Size: 20" X 1 3/4" (IMPORTANT: These only fit Schwinn S-7 rims... they will NOT fit a 20" X 1.75". This is because a S-7 rim has a 419mm bead diameter and a "regular" 20" X 1.75" or 2.125" rim has a 406mm bead diameter. Although mathmatically the number looks the same, in the world of tire sizing, it is a COMPLETELY DIFFERENT SIZED TIRE. However, 20" X 1.75" TUBES are compatible with these tires.)

Jaan:

--- Quote from: bobbbbsy on December 05, 2014, 12:18 AM ---maybe u can - i think i tryed it the other way round .

http://bmxmuseum.com/forums/viewtopic.php?id=429549

maybe that means with rims ? oh im confused now.  :buck2:

--- End quote ---

That thread is about 1 3/8 tyres not 1 3/4  :crazy2: :LolLolLolLol:

Jono:
Cheers boys just been reading Sheldon brown thingy n yep there's about 10 mm difference in rim so it's s no go cheers guys have to grovel to seller on eBay usa see if he'll csncel my bid lol

bobbbbsy:

--- Quote from: Jaan on December 05, 2014, 12:24 AM ---
--- Quote from: bobbbbsy on December 05, 2014, 12:18 AM ---maybe u can - i think i tryed it the other way round .

http://bmxmuseum.com/forums/viewtopic.php?id=429549

maybe that means with rims ? oh im confused now.  :buck2:

--- End quote ---

That thread is about 1 3/8 tyres not 1 3/4  :crazy2: :LolLolLolLol:

it was past midnight - not responsible.  :LolLolLolLol:

--- End quote ---

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