2.75" (70mm) is probably too wide for many stock frames, but you may be able to spread some steel frames or use triple-tree forks.
Originally Posted by Ludwig II
A message from Schwalbe UK on road legal moped tyres:
"We do have moped tyres that fit 26" rims.
Article code is either
11322000 for 26 x 2.25 (2 1/4-22)
11323000 for 26 x 2.50 (2 1/2-22)
I can't tell you who we've sold any too because we haven't got any stock and haven't sold any for a while!
Because the tyres are nearly 70 mm wide, you will only be able to fit them to the rim. You won't be able to fit them into a standard dh/XC/ all mountain frame becasue of clearance. Unless of course you are custom building a frame to fit such wide tyres"